I'm not. The kinds of things that people say that you are probably thinking of when you make a criticism like in your original post absolutely are real and deserve your criticism (in fact, I'd put jrm4's tone in that category!) - but over-applying that criticism does harm to a position that is justified in other contexts. Remember, when you see somebody (e.g. maybe a writer or fan for a show...) make a criticism of a group you are a member of, they are sometimes referring to something truly deserving of criticism. Always try to keep your criticisms as focused as possible in turn, to avoid the vicious cycle of political/social hatred (especially in the context of fictional media, where it produces a tone that is particularly obnoxious/petty).