Seeing someone deny the womanhood of two women who aren’t white and calling that racist only seems like a smear if you aren’t familiar with the long history of associating femininity with whiteness, and more specifically associating black women with masculinity. Black girls and women are consistently viewed as more masculine and less innocent than white girls and women.

Waiting for JKR to say “I’m doing a racism” before calling things she’s said racist essentially means never calling her racist.