Her original sin was to say the article title "Creating a more equal post-COVID-19 world for people who menstruate" was an odd way of putting things rather than saying a more equal world for women. Deeply shocking to point something like that out.
That was not nearly her first time being transphobic online.
She's never said anything unreasonable on the matter.
Her original article was a long diatribe that basically amounted to insisting trans women should be forced to use male bathrooms, which has on multiple occasions directly resulted in their assault / murder. I guess personal safety is just a different of opinion, though.
As a straight man I would also feel safer in the women's room, does that mean I should be allowed to use it? Personally I don't give a shit what bathrooms someone uses.