Does anyone actually believe, though, that if a woman with impeccable "leftist" or "socialist" credentials did what KJK is doing (by which I mean travelling around the country and the world making space for women to speak relatively freely about their experiences) that she would be tolerated, let alone welcomed or platformed? I mean, imagine that Nicola Sturgeon had a change of heart and decided to spend her retirement demanding that women be given the same rights and porivileges as men in practice? Or Diane Abbott, or Yvette Cooper, or whoever you like. No, that person would also "become" right wing, far right, Nazi, white supremacist, transphobic, homophobic, etc. We've already seen it with Rosie Duffield, Jenny Marra, Johann Lamont, Joan MacAlpine, Joanna Cherry, and now Ash Regan.
The issue isn't the specific politics, it's that feminism itself (or the fight for women's rights, if you like) has been branded as inherently regressive and reactionary. It's in bad enough taste just being an icky old bio-woman, imagine being gross and selfish enough to speak up for women as a class? Where that leads, though, is to would-be feminists saying fuck it, I can't win. And then it's a choice of compromising or sidelining your fight for women's rights but still trying to fight for other stuff you might want politically or putting women's rights first and potentially being forced to compromise on the rest and/or being cut off from people who should be your natural allies. Whoever wins from this, it's not women and girls.