Why doesn't Fly Away Simulation just publish everything that gets uploaded?
Because a library is only as useful as its worst file. On a publish-everything site, every genuine release sits next to broken uploads, duplicates, re-uploads of other people's work and packs that were abandoned years ago. Simmers learn not to trust what they download; search engines learn not to trust the site. The good work gets buried with the junk.
We made the opposite choice over twenty years ago and have held to it: a person installs every submission, flies it, and only then does it go live. That is slower, and it costs us real editorial hours per listing. It is also exactly why a listing here carries weight.