To a degree I disagree, but at the same time I do agree.
To much complaining can get just as annoying as role playing and to some people the two are equally insulting. I admit I complain on occasion, but I try to keep it in until I've reached that point where I just have to let it out. Fortunately, the role playing has died down a lot lately it seems so this site hasn't really been that bad.
Role playing can be considered insulting because it tells people who take things seriously that these people think it's all a joke. With Dragon Magick, for example, many practitioners of that see it as a way of life, a subculture of sorts, and so seeing people roleplay about dragon slaying or being a dragon can be a little upsetting when they are doing so right where the serious practitioners are meant to be studying and practicing. I can understand why those members would complain, and they have. For anyone who doesn't already know, those members have already left to a new site which their most experienced member created.
Complaining can be insulting because, as you said, Florence, some people try hard to make this site a good place and those complaints say it's not good enough. That is rude, it is disrespectful, and although everyone needs to complain once in awhile there are limits.
So that's my view on it all. We went through a time when there seemed to be a new roleplay in the forums every single day, a new vampire or mermaid bragging about their immortality and mastery over all domains, denying that anything they said was in any way made up or stolen from an anime or cartoon. During that time, I was among those who would often complain, but being just a member there wasn't much more then that that I could do except take the matter right to the roleplayers which I often did. Now, however, those role players seem to be gone for the most part and so there is little need to complain.