Users can create and tag games and then exclude games based on that tag. There's even an "artificial intelligence" tag but looking at the games tagged by it that means something else than what we're discussing here.
But I think what the other person was pointing at is that developers are supposed to have AI generated content disclosure when they have any pre-generated AI content in their game or use AI to live-generate content. AI assisted tools (such a using AI to code the game) don't need to be disclosed. You can find an example of AI disclosure on ARC raiders because they've used AI to generate voices. This is something developers are supposed to fill disclosure but a lot of the devs don't even when their game does release with AI assets. And my question was that what is Valve supposed to do when the developer chooses to ignore that clause?