The quality of the meat in Berlin's canteens is low. The meals are more expensive and the serving sizes are smaller. Even before this move I saw no reason to eat anything with meat there. BTW: There is already a vegetarian/vegan canteen at the Freie Universität, it's called "Veggie No 1" [1].
[1] https://www.stw.berlin/en/dining-facilities/mensa-fu-veggie-...