Seeing as how the point of that archive is to store rejected or outdated analyses, I don't know what your point is. What would they be available for? Everything there, even the actual analyses, are pretty useless from a learning standpoint. I just don't understand why rule-violating threads containing things that should be posted here are kept.
It makes it easy for mods to go back and look and see if a person has posted in C&C before and if they've tried to post bad analyses / dumb threads in the past. It makes it easy to say "oh they tried this before and still haven't learned, infract." It's simple record keeping.