I think my biggest issue with that is that people who just want to replay a game in a fresh way once or twice aren't the kind of people who are going to stick a

I think my biggest issue with that is that people who just want to replay a game in a fresh way once or twice aren't the kind of people who are going to stick around and form a community; and those communities are what foster the creativity which brings freshness and depth to the games. I see it as quite similar to AI music creation, which, sure, allows people access to music that didn't exist before without putting in the effort, but in doing so it replaces what has historically been a community endeavor with a highly individualist, consumerist one. My perspective is biased by the fact that such communities are an important part of my life. I don't want to see my years-long collaborations and friendships made obsolete by someone looking for an afternoon of nostalgia. And maybe everything will be fine, and the AI-users and the community-builders will go their separate ways and leave each other alone. But communities which exist today are having to ask how we should relate to AI, and my conclusion is that it's best kept out of hobbyist spaces if we want those spaces to continue to exist.