She's right. This has been happening for ages, alongside 'trans woman' is a subset of women, just like 'black woman'. There used to be floods of online posts and articles transplaining that, since black women don't meet 'femininity standards', there's no viable definition of womanhood. It's despicable.
This very especially marginalised, ultra sensitive, intersectionally inclusive 'community' is as racist, sexist and homophobic as fuck.