no matter what you're imagining in your head, "white channer trans women" do not in fact exist in any significant number, and do not hold any real institutional power, on fedi or elsewhere (other than, well, on 4chan).
"white channer trans women" is a transmisogynist dogwhistle aimed at smearing trans women and transfems who don't perform patriarchal femininity to the speaker's liking.
