Well, if you want to be serious * about it, this is what I think is happening with FWR, after all these threads about it.
It's a niche section about a political movement/ movement for social change/ideology (how do you define feminism?), which has attracted many passionate women and men.
The topics covered will generally concern something which one or more MNers consider to be an example of continued sex/gender inequality. The forum will become quite serious. Although people will occasionally post evidence of change already achieved, the focus will be on what is yet to be done. Thus, it does not seem a joyful place.
Some people infer from the quantity of serious posts, that the FWR regs are serious people, rather than normal people, who talk and post differently, according to subject, and context.
I can't see any way to solve that.
Secondly, gender/sex inequality is often judged to manifest itself in sexual relationships, sexual attitudes, and our society's continuing major problem of widespread rape and sexual abuse of men and women. This is much discussed. The focus on problems with sexual relationships, causes some to infer the posters hate sex in itself. This is especially frequent, due to a) the pre-conceptions many already have about feminism and b) trolls and/or posts concerning really out-there analyses. No, not out-there, I mean out- there.
Thirdly, having the skill to deal a question politely, tactfully, PATIENTLY and persuasively, even though you've heard it 50,000 times before, is not usual for most humans. Unless the regulars in there are saints, I would expect them to be more abrupt in answering than they used to be. Posters who are asking a question for the first time, for them/are arrogant enough to think they are the first person in history to ask a particular question (I'm trying to be funny here), may pick up on a mismatch of tone. Some of them will be put off FWR.
Feminists are people too!
I must note here, that if anyone here think the FWR regs are brisk, you have seen nothing. I once lurked on a thread specifically created for newcomers to ask questions about Market-Anarchy (in a forum about Market-Anarchy), and the viciousness there was unparalleled. As far as I could tell, the forum had never even had a true trolling problem, and yet they treated all questioners as trolls.
FWR, by contrast, has had a trolling problem, and none of the members actually run the main site. Yet, they're much nicer, as far as I can see. There's a lesson there.
*Why? Why?! Why?!!