Yeah, and like... I care about you enough to want you to know what I think, even when it's less pleasant than usual!
Re: genuine and honest, I don't really see why you feel the need to be genuine and honest. Like, it's OK to change your mind on what's written in your work, you don't need to make sure everyone else who comes after the change is aware there was a change. It's not like if you had committed harm and that part of the repair work was to always tell people "I messed up in that way" or something.
I assume you want to leave the jam version up, so... I think what I would do is add a note in the jam version, like "post-jam note: I realized later that I do not want to condone the use of genAI in my works, due to the environmental, ethical, and other concerns regarding its current state. I'm still leaving this bit here for archiving purposes, since this is the jam version, after all. In the current version of the game, this bit has been replaced with looking into Wikipedia instead." and then in the new version, you don't mention the previous genAI bit at all, and you just write your Wikipedia gameplay instead.
Although I, personally, would probably archive the jam version and just put up the updated one instead, maybe with a name like "Inquiring Minds v1.1" so that people know it's not the jam version.