That website linked above is a fucking racist homophobic mess. Seriously, read some of it.
It also talks about "transphobes" "deliberately endangering the lives of young trans people and children".
Oh, hang on........is it US who want to halt their puberty, lop off their healthy body parts, tell them they are in the wrong body and pump them full of dangerous chemicals that will impact their whole future life? My mistake.
"Man", "Woman" and "Non-binary person" are social/cultural statuses. Trans people have existed for millennia throughout history and in every part of the world. Consequently, trans people have as much right to claim their genders based on biology or otherwise as cis people do"
Biology denial at its finest.
And utter bollocks.
Man and woman are social or cultural? How many men are on the labour ward? How many women are in the prostate cancer ward?
If you're going to try to pick a website to support your claims, try not to pick one that makes you (and them) sound like deranged lunatics.