I think so.. to me when they put anon.. to me they are not at all who they joined on as.. I would not give a comment or opinion and put it under anon.. I am happy with who I am.. and pretty sure many people know a bit about me through my profile.. I have nothing to hide.. ever
I mean, I always feel like you are given the option of whether or not you want to deal with them. However, there are those people who constantly keep posting on every single question you look at or post and are always rude. That sucks, in that case, yes. Other than that, I don't think it's that necessary.