Should this be tagged nsfw?

By my own standards, no, but lemmy as a whole seems to be kind of prudish. Maybe a presenting foot pose is over the line for them?

I personally have no problem with it but I can see how other people might have one. Then again, if we go with "nsfw -> might get troubled looks in office" then a big part of the posts in the Moe communities would need to get marked xD

You already changed the marking, so I would say leave it as is. But similar images don't need to get marked except if they also get reports (form multiple different persons).

Might be because it looks generated, or uses stock images. The ramen bowl is in a perfect perspective to show it off on a menu, but it should be spilling out in the orientation it's been placed in. It defies gravity. The burger is random and out of place, with a different art style. The same for the cat above it. The menu is also out of place and garbled, when it should be in focus like everything else at that distance.

I guess it looks disjointed and way too busy to look like someone did it entirely themselves. So people think it's AI or at least lower effort.