They do not pretend or insist they are women though.
That’s correct, generally speaking.
Also after reading it seems it’s mainly limited to Samoa rather than the other Pacific islands as I insisted earlier which probably explains controversial people like Folau who despite being born and bred Aussie is from a Tongan background and not Samoan
Folau is Assembly of God, a fundamentalist Christian church that was introduced to the islands by western missionaries, that’s why he has the views he does, it’s not his ethnicity or culture. Samoa is extremely homophobic. Tonga does not have a law against homosexual sex, Samoa still does.
Māori do not have an equivalent to Fa’afafine, nor do any other Polynesian cultures that I’m aware of.