Hm. Museums can restrict cameras. Public buildings in many cities forbid professional photography. I can see it - food has many aspects, including the artistic. Its ephemeral (you eat it) but so is any performance art. I don't see any logical inconsistency with chefs protecting their work.
I'd like to mention that the headline is a bit misleading. It's not about taking pictures of works (or people, for that matter), it's about publishing these pictures without consent of the creators of those works (or the individuals pictured in the photograph).
If they object to a photo, I imagine they would be apoplectic if someone analyzed the contents of their doggy bag and reverse engineered the ingredients.