FWIW, I didn't engage on the Guerilla Girls thread because there's not really any discussion needed. I'm pretty sure everyone on a Feminist board would agree it's a shit situation. There's load of analysis of the female body in art out there - I wrote some of it myself 20+ years ago.
I'm not saying it's ok - clearly not, because it's still an issue 20 years on! But the conversation that needs to happen is not here on the feminist boards but out there in society about why it is, when we all agree on paper that sexism is bad, shit like this is still so ingrained.
And that's also the reason FWR appears to be "dominated" by gender ideology - because in its current form it's a new thing and feminists are working their way through it, sharing experiences and analysis and coming to conclusions and consensus (or at least coalescing into a few camps).
By contrast, the stuff that is more lib fem is more established and already accepted at least in principle in society, so the work to be done is less theory and analysis, and more getting out there and getting that principle applied in practice. And as I said in an earlier post, that's happening all over mumsnet every day.