OK sequence of events. read about JKRs' stupid tweet and subsequent furore. Read about her self-justifying open letter. Decide to see what's behind it all and find the original article JKR tweeted about.
After swift read of article, discover that it is about the provision of safe and hygienic spaces for 'people who menstruate' to manage this function. Authors of article were careful to note that not all people who menstruate are or identify as women. A 13-year-old girl may be a great many things (including, occasionally, a royal pain in the arse, if my daughter was typical), but she is not a woman. There are non-binary people who menstruate. There are trans people who identify socially as men but who have not yet physically transitioned.
Now, as a 61-year-old white cisgender male, even I understood that (though it was remiss of me not to have given the matter any thought before). Although anyone who has read Harry Potter will be aware that Ms Rowling is not the sharpest knife in the drawer, I took it that anyone who had actually read the article in question would also have understood what was being said.
Thus when I read Kelly Lawrences' piece, I took the opportunity to point out what I'd seen. A response which Ms Lawrence was kind enough to acknowledge.
So if you would be so kind as to enlighten me as to how my response can be considered 'ignorant criticism', I would be grateful.