I see her randomly all over the place, and have for years. She's fouled up gaming communities, book communities, feminist communities, and who the heck knows what else. I don't think she cares one bit about social justice; I think she just likes making other people feel like shit, period. She's one of those people who makes me wonder if she's in this to make all the rest of us look bad. And by "all the rest of us" I mean "human beings". When I see her posting comments somewhere, I don't post there, and I've never even had a personal run-in with her.

ETA: All of which is to say I obviously didn't read all the stuff you linked clearly. I have this annoying word problem because of Tramadol, or maybe because of my spinal cord being compressed all the time, where I think I totally understood something but didn't really. Anyway... yeah. I think Winterfox isn't an example of SJW rampaging, because I think she is basically a troll (iirc she didn't give a fig about social justice when she was rampaging through gaming sites years back), but the fact that she has so much support definitely highlights problems within SJ culture.