Well, to generalize first, I'd like to say that you will always find both level-headed and facepalmingly shameful examples of any following or fandom. The sad thing is that the shameful ones are often the loud, obnoxious types that people remember a whole lot more than the ones who otherwise act pretty normal about the whole thing.
That said, while I tend to avoid forums on the matter, I know there are Zelda fans out there who are ass-numbingly stupid. I enjoy the games highly(I suppose, that is to say, I enjoy the series' formula), but I'm not above acknowledging the flaws, because they're not perfect. Also, I don't know who the hell says this, but I disagree with whatever fan says that each game is merely the blueprint for the next, and therefore the current game shouldn't be treated with any complaints because the next one will fix any problems.
In general, though, I am a fan of visual media as a whole. Movies, games, animation, sequential art, the works, and I have seen depressing elitists and idiots from all walks of those lives.
It wouldn't be that I'm ashamed to be a part of a fanbase, it would be closer to say that I am ashamed to be of an era when the internet is at its most prominent, and gives way to the most stubborn, narrow-minded, and immature cretins who dwell in it.