Even worse than that, AI are perfectly capable of generating very good images if you have some taste and a few keywords to prompt it. This shows that they have no taste, no care for their business and no shame

Just the fact that they're generating images of fictional food rather than taking pictures of the food they actually make shows that the restaurant has no taste or care, or has a reason to hide their cooking.

We have to quickly drop the expectation that the platonic ideal usage of AI is what we should expect to see. The typical use of it will be as a cheap/lazy labor machine like you say.

It would still be false advertising even with "taste" since I still can't tell what the actual food looks like.