Because at some point they will have to choose between deleting content or expanding storage. Data cost isn't free and AI games are going to be taking a vast majority of that in the future. You can say games aren't hosted on this site and you would be correct but every time a new game is added it uses up data and it may take awhile but with how massive the influx of ai games are you will see some sort of new rule regarding AI games within the next few years.I'm genuinely curious why you think they would do anything about it?
This is a piracy site, not a showcase of quality.
Personally if it was me id sort them out for quality too because finding specific non ai games are going to be hell when we have thousands of page of AI slop games.