a big reason that drove me was that I have a micropenis
Fake. There are no "reasons to drive someone" other than their internal gender, this sounds like something a cis person who thinks being trans is a choice would say.
Yeah, certainly seems fake. But I can conceive of someone that's NB, fluid, or something else who is unable/unwilling to admit that to themselves or choosing to remain cis presenting for social reasons deciding to present as a woman due to a micropenis.