It was always going to be this way though. This only stops if the people who got it publicly wrong have a story they can tell that makes them feel safe to change their minds. HL is giving them a script that can do that. And they won't challange it too hard because they all need it.
TRSOH will smoothly elide the sides until they have executed a 180 turn without ever directly admitting it. TERFs will still be the bad witches, only now our crime will be that we were so hateful and mean, and almost certainly also homophobic, sex essentialist racist right wing loons, that TRSOH very understandably thought trans issues were the same as all our other crazy prejudices.
Yes, it was all the TERFs fault because our unhinged and unreasonable hate of trans people hid the real problems. That TERFs might have been right on this one will be just a coincidence - we weren't right because we actually understood what was going on or did the research that TROSH didn't, or really cared about the damage being done to women and to trans identifying children, it's just that our blind hate of difference and change happened to stumble on an actual issue.
TERFs were right but for the wrong reasons, while TRSOH were ok wrong on this one, but driven by very much the right reasons. And in socially progresssive politics/media/society, where the fundamental (expressed) value is tolerance and respect for difference, it's less damaging to be wrong for the right reasons than right for the wrong ones. Wrong for the right reasons means you are still a good person; better to fail because you are too good for reality than suceed because you are a cynic.
I expect all of this.
But if it gets us to where we need to be which is that society moves past this weird obsession with genderising personalities and then trying to bully away sex to support that belief by medicalising bodies and by denying the significance of sex to women's life experiences, I am ok with it. TERFs are not the feminism they want, but TERFs are the feminism they need.