Oh yeah, saying "vegetarian mac n' cheese" would be really silly. Though honestly I don't see much/any of that. What I see more often is labeling things vegan, which is an incredibly important distinction given how strict veganism is compared to vegetarianism. Vegan mac n' cheese would be totally different from standard mac n' cheese given that vegans can't have dairy. So I'd never begrudge anyone a "vegan" label! Unless it was, I don't know, on a bag of carrots or something.