I didn’t. The question isn’t whether it’s new, but whether it’s even applicable in this case. Your argument for it is weak.
You explicitly appealed to their feelings.
They face the same discrimination that I face.
Somehow I carry on.
Race isn’t equivalent to sex. Racial segregation is not justified, sex segregation is. The logic of your argument would invalidate all sex segregation, but you don’t actually believe that, do you?
Your arguments aren’t serious, so I don’t take them seriously.
Then why can’t transwomen just use the men’s room? You claim you don’t care what traits people like, so why can’t they just put up with going to the bathroom around men?
You have no consistency.