This is happening too. Apparently, people are changing their race. The World has gone crazy:
https://www.usatoday.com/story/news...-born-white-says-he-feels-filipino/858043001/
https://en.wikipedia.org/wiki/Rachel_Dolezal
Has nothing to do with being Transgender.
If they want to be legitimized, that's on them to do the work, so to speak.