I do think that AI signage/advertising is the new signifier of low-effort, low-skill output and that is how it will be perceived by clientele.
Similar to someone just scrawling a sandwich board sign in chalk (which at this point I would prefer).
Businesses will stand out from a taste perspective by continuing to hire human effort to make recognisable human output.
Escaping AI slop will become a privilege for the wealthy.
Writing in signs and menus in chalk has been a signal for a high quality restaurant for as long as I can remember. With photos of the food, and/or ring bound menus being the worst.