@Rachel_Thorn I know of one person who surprised me by saying she was an ex TERF, would never have guessed.
I think more broadly one won't see many vocal "repenters", though. Those who were never active in those circles will remain so, and those who WERE will know full well how much abuse they would get and stay quiet.
Of the second lot, those who want to get out safely will likely just quietly fade away if they can. The loudest ones are trapped by their own mob, though.