I pretty much agree with others here, that I can understand why Amanda capitulated, but think it was cowardly of her to stick the boot in to JKR while she was at it.
I'm starting to get really sick of this constant fear of being "cancelled" famous people seem to have. If enough of them took the JKR route - adopted a compassionate but concerned stance and refused to deviate from it despite the Twitter hysteria - gender criticism would gain legitimacy as a point of view and the mob would lose their power to bully people into silence.
It can't come fast enough for me. I really do think JK Rowling has done a lot to cement her legacy with this, and history will judge her kindly for it. Other people will be struggling to live down some of their own comments in ten years' time.