No, they propose girls who are transgender compete with girls.
Transgender girls are boys.
You mean like gay men are liars who chose sin?
Um, no? What would gay men be lying about?
Being gay.
Sometimes gay men lie and pretend they're straight, I suppose.
I think you're misunderstanding what KrIS is saying here. KrIS does not appear to be talking about gay men actually lying, but instead appears to be alluding to a meme endemic to a subculture of conservative Christians that holds that there's really no such thing as gay people. According to the meme, being gay isn't an orientation, or an experience of feeling sexual attraction to people of your sex but not to people of the opposite sex, or anything else like this that just happened to you so you could plausibly blame God for it. Rather, it's those people's own choice to prefer the forbidden fruit
because it's forbidden fruit. The theory is that so-called "gays" are choosing to go against their natural sexual inclination to couple with the opposite sex, in order to act out their rebellious urges, and are just lying (perhaps to themselves) about their motivation. The point of the theory is to argue that it's entirely their own fault, so Christians are justified in punishing them.
KrIS appears to be expressing the opinion that your view, that M2Fs not really female but male, is analogous to those conservative Christians' view, that men who lie with mankind as with womankind are not really gay but rebellious.