Same take here - these games are addictive due to certain repetitive predictable patterns. I expect more and less complex automatons populating a game world and emergent story resulting from my flawed meat brain inputs.
Another thought that follows is that any kind of generative behavior, not just LLM, runs this risk of an endless pointless blandness. I.e. like with any artform we want there to be a point.
If those games are to feature LLM AI it would have to stand on it's own, with someone like these guys having thought it through.