Just as breeding with hacked parents is still a lot of time and effort. For four IVs, you're still looking at 1:147 at best, and that's assuming the 4 easiest to pass IVs. Most people will be looking at the harder to pass IVs at that point.Quick Hatching certainly helps getting a good pokemon faster because it let you hatch more eggs in less time, but again, you have the same chances of getting good IVs, and you do not change the pokemon data.
Plus, its main use is to make hatching less tiring and painful to our fingers, not giving us better pokemon faster. And nevertheless, it'll still take a lot of time and effort.
You may not change a given pokemon's data, but you are changing game mechanics.
Same odds with more chances = effectively greater odds. I'm not sure who you're kidding by saying the main use is to make hatching less tiring and not to give yourself better pokemon faster, but that made me laugh, thanks.