Speaking of low effort, "ban Z" does not constitute a thoughtful and intelligent solution to "Z created a problem."
Z=AI in this case, but lazy solutions are as old as time.
It was lazy to ban DDT or X-rays for determining shoe sizes or watches with radium paint.
Get rid of the thing that's causing problems is both thoughtful and intelligent when the alternative is either ignore the problem or some as of yet undefined activity that is entirely outside the current scope of business. Steam isn't obligated to accommodate AI-generated games or participate in whatever currently undefined process would be required to make them palatable. That's the studios' responsibility.
Nobody browses the Steam store at random we all use filters and recommendations.
Not that I agree with your assessment, but why do we need a thoughtful and intelligent solution here? Seems to me people want a simple, easy solution and bans or required disclosure seems to fit quiet well here