In my opinion, wanting the benefits of the patriarchy is different than wanting to be a man, with the acknowledgement that there can be some overlap between the two. Where Mulan's military service was temporary and brought about by external pressures, a trans man likely would not need the threat of an elderly family member being drafted to war to make the change, nor want to go back to living as a woman. But at the same time I'm sure there are women like Mulan.

Yeah. I, cis woman, sit down once a year or so and ask myself a lot of questions (am I happy here, do I still want to be doing x) and one of them is, "am I a woman?" And the answer is "yes, despite how much this society makes that suck ass". In my head I'm a woman. I do wish I had way less tit. I might be getting that soon though. Cancer scares suck ass though.