(Moving this reply here because while it was in the Little Annoyances thread, the part I responded to both got away from me in length and wasn't really the main point of the response)
I mean we've finally got one and yet Game Freak are still apparently so unable to think outside the box that they didn't add a level scaling function. Which means there's basically a clear intended path through the region. So there's... not that much of a point to having an open world, then. Sure you need some constraints, like preventing the player from catching high-level Pokemon in SwSh's Wild Area. But what I enjoy about this series is the freedom to do things the way you want - and in lots of little ways I think that aspect of the series has been further and further constricted of late, despite the surface-level appearance to the contrary.
The thing that gets me about the level scaling is that it wouldn't really fix what the source of the difficulty is (or is not), which I think even the Teal Mask kind of showcases both intentionally and unintentionally: the actual Pokemon selection.
What good is scaling Katy up to Level 30 if you do Iono first going to matter unless they also evolve her Pokemon past the intentionally-low-power first stage Bugs and Teddiursa? To make the difficulty scaling actually matter you'd have to have checks to update the usable roster by the major opponents (if not at every single milestone, something like every 2-3 out of 18 leaders you fight), which is a massive scope increase for the team design that, let's be frank, NOBODY is going to approach for variance more than 1/20 runs where they specifically want the challenge. How many times do players skip around or take a different order for Erika, Sabrina, and Koga in Kanto, or go to Pryce before Olivine and Cianwood in Johto?
Level Scaling isn't going to get anywhere because outleveling the opponent is always a solution, unless they scale directly with your team by taking an average (as some RPGs do to keep new recruits "on pace" with you). Fighting a Level 50 Grusha with Level 60's isn't that different a challenge from fighting a Level 20 one with Level 25-30's in practice, you're still mostly going to roll over the Ice Weaknesses with maybe a stat check by his Fully Evolved Mons. SV's open nature is down to what order you want to gain certain rewards in: Gym Battles let you catch stronger Pokemon with obedience (opening your roster up for Wild Encounters with a "level floor" by where they spawn), Titans give you more movement options to look for items and special areas more easily if not totally new accessibility, and Starfall Street unlocks TMs so you have more moves available to customize your team or give you objectives to look for and craft them.
Ultimately I fail to see how this is anymore railroaded than previous entries, in that there at least exist side objectives you can make for yourself regardless of if the main progression has an intended order. Compare XY: what is there to do if you're not going through the clear story path? Some stuff like Pokemon performances but no real items to collect or side areas to explore just for their own sake (compare the Safari Zone/Great Marsh in previous games, Fuego Ironworks in Gen 4, the Abyssal Ruins in Unova or B2W2 specifically with the Desert Resort and Relic Castle).
Onto the Teal Mask as my counter example of the Level Scale aspect: Kieran sucks at the start of the DLC, just having a Sentret whether you do it main game or post-game. He's depicted as a meek kid without a lot of prowess for battling or even socializing, but as the plot shows him developing a drive and then obsession with being able to match up to you, his team gets stronger until it ends in what many consider a decently formidable in-game boss. This isn't simply the result of him leveling up his early stage jokers, he adds and replaces members that are more formidable in terms of stats or running strategies (EX: His Poliwrath swaps from using Special moves off its worse stat to stronger Physical attacks and a Belly Drum set up with a Sitrus Berry). If Kieran's battles were simply a team of 4-5 mons like his Paradise Barrens or Loyalty Plaza team jumping 5-10 levels each time, there wouldn't be any increase in difficulty as you do them all.
In turn the reason they can do this feasibly is because Kieran is one recurring opponent to build upon, rather than 8-18 opponents with varying type specialties or outright different strategies necessitated by their Pokemon that you could challenge in any order. Imagine them having to do Kieran's thing for over a dozen different battles, knowing that 75% of those variations are not going to be seen by an appreciable number of players, and is it any wonder that's not where they choose to put their incredibly crunched time and resources?
And this might just be me, but I personally don't get this obsession with Open Exploration games also needing to have non-linear progression. No game is truly non-linear in a meaningful way. Even something like Metroidvanias have gates in the form of movement upgrades or keys that you need to acquire using other abilities that take massive effort to skip over if they even can be. And the other side of the coin is something like the Open Zelda games, where none of the subplots mean jack to each other because they can't know which order players will do them in, and they barely mean anything to resolving the larger conflict because you could potentially go punch Ganon in the face without having done any of them. I remember a TotK compilation that put every Sage next to each other and showed they literally tell you the exact same information multiple times because they can't build off anything established prior in the story without knowing if you've done it already.
tl;dr Level Scaling is a lie, it won't fix any of the complaints people have about the progression in SV on a meaningful level, and the necessary measures are a waste of manpower by Gamefreak.
I think their only concern is "well if it's too broken we fix it next gen".
I am honestly surprised we didn't get Koko in first place considering Ancient paradoxes have two solid enablers (and in fact, once restricted are allowed, they again get two, as Groudon exists) whereas the Future ones are stuck with ... Pincurchin... and Miraidon.
Honestly it wouldn't surprise me if GF hadn't even thought as far ahead as what Legendaries they were bringing back for the DLC, so they hadn't decided Tapu Koko wasn't coming back by that point (or even if they shifted gears after early VGC while Sun was just already locked in because Torkoal was base game, Groudon was base transfer, and Ninetales had been announced for the DLC ahead of time). The thing is while Flutter Mane is one dumb case, a LOT of the Paradoxes feel like they turn into VGC Ubers with the right support (Bundle outruns Flutter while having Icy Wind for fast Speed Control, Iron Hands goes from a Rocket Launcher to a Rail Gun with Quark Drive, and Iron Crown prefers Psychic Terrain for Expanding Force but they withheld Tapu Lele too so I count this).
Then again they also buffed Incineroar who was already managing top usage in Restricted-allowed Metas so I can only assume the Mon designers are not on the same page as anyone tracking VGC trends. Heck I wonder if those designing new Pokemon are even aware of what Old Pokemon are returning ahead of time.