FDS is a weird place. I think a lot of the women there have some kind of trauma which is understandable. Some of the posts are I guess decent advice for not falling for manipulative/abusive behavior by men etc. However most of it is TERF shit, horrible classism and weird stuff bordering on paranoia that comes off like they haven't interacted with a real person before. The classism isn't even subtle BTW, it is all over the place and so fucking explicit.
Edit: Also they have many similarities to incels. Like, they even have shit like LVM and HVM (low value male and high value male) going on which is very reminiscent the Becky/Stacey shit incels do.