Did that collection indicate how they were made? (if they were AI generated or not)
I don't think so, but is it against the rules to use IA-generated images on the cover? I mean, it's not really a game asset, just a promotional image that could easily be changed without affecting the game.
Yes it is. Title covers are part of the package.
In that case, I'll change the cover image just in case. Thanks. EDIT: done.