No unless you are being a Dick about it, mean, doing it to bring someone down or saying it as fact instead of opinion.
It is however wise to always say something constructive along side the critical bits.
Dont sweat it. Only real nerds and weirdos are even going to notice and we dont mind xD
If you really want the Lore to stick tho you can add that they used to be carnivores but as part of their domestication they were Bred to be herbivores over generations.
Hmm...you'd think in this day and age, what with Japanese Schoolgirls frequenting anime, JRGs and whatever else...that someone might have made some gym clothes for the generator. You know, the ones with the short bloomers.