FWIW, I don't think feminism other than radical feminism is watered down necessarily - often it seems to be that people don't like women being treated badly, but don't see it as a single-root problem - so they'll maybe identify with, say, the idea that it's bad that women are financially penalized for having children, but might see that as part of a wider problem with capitalism. That makes sense. Or you get people (SGB) springs to mind, who aren't a 'watered down' version of anything, but who don't have the same attitude to porn that radical feminists usually do.
I do think that, for me anyway, discussions are meant to be about education. We don't all have to agree, but unless we are chatting or joking (both good but probably not what you're thinking of mostly), we probably are going to be trying to convince each other and work out what's important - that is education. I don't get what you're saying if you say you don't want to be educated because to me that's what discussion is? If you mean you don't want people to expect you to agree with them because they have told you something, I am 100% behind that.
I think the problem is, someone said a while back that it'd be better if radical feminists would just compromise a bit, because she reckoned that if there are two people arguing intelligently, the truth is probably somewhere in the middle. And I think a fair few people feel like that, even if quite deep down. I certainly feel like that a lot on AIBU - you can usually say 'look, calm down, it's six of one and half a doen of the other'. But when you're talking ideology, that won't happen. People will just flat-out disagree at times. And it's pointless to say 'well, that poster will feel better if I accept she might be right', because then you'd be lying. All you can really do IMO is accept they have their opinion and you have yours.
There's also a problem that sometimes - and I don't mean this as a personal comment stripey so don't worry - people can say things that are offensive without realizing it (eg., I have seen people post things about whether or not a woman who's been raped in such-and-such a situation should have done things differently, without realizing they were talking to a person who had been raped). This isn't necessarily anyone's fault. But often, if you see similar topics in Relationships, people will be more aware that they might be making comments that have a real-life relevance, whereas here people are inclined to forget that.
And then there are the minor-but-grating things like constantly having to point out that 'radical' and 'extreme' don't mean the same, or having to say 'the patriarchy' doesn't mean 'men', it means 'the structure in society that discriminates against women'. I don't think you have to be radical to get fed up, because you feel as if people could google these things instead of asking ... it's just like when on AIBU someone will be having a bad day and will snap 'it's been done FFS' when there's a post on P&C or BF/FF. No, it's not great when people snap, but it's not unique to feminism and it's obviously not a real problem or no-one would ever post in AIBU.
I really like MN and I like chatting to people - I doubt I turn into a monster when I step from AIBU/Chat onto here ... give us a chance?