Yeah I suspect the actual number of games people care about has stayed largely the same, there's just a torrent of slop that's skewing the numbers. It's easy to hit 50% when you more than double the number of games being submitted by spewing even more garbage than there already was. It's so bad Valve is actually having to adjust their store algorithms and systems to try to keep the slop tsunami from drowning out the good indy devs.

I would also be interested to know how many were developers using ai and how many were people who think ai makes them a programmer

was already an issuw before AI, much worse as it's taken off. not really sure what the answer is from valve tbh...outside of maybe jacking up the deposit to submit a again (and increasing threshold to get deposit back)?