I have a rather depressing theory.
There are two kinds of values and functions prized and vital to humanity above all others.
1) The ability to give birth.
2) The ability to provide and protect.
Trans men pre HRT retain fertility. Post HRT is perceived as stronger and tougher. Society sees value there either way.
Transwomen can't give birth either way, and is seen as losing strength and toughness post hrt, so is seen as losing the ability to provide and protect. So society sees no value.
Even men just dressing feminine*, get perceived as being unwilling to provide and protect and instead is displaying a wish to be provided for.
From that point on you're seen as valueless. Therefore disposable. That's why transwomen are murdered and police barely bother to investigate. That's why trans panic defense is accepted, and why they want you to go to the mens bathroom and don't care about the risk to you.
If this theory has any truth to it, feminine men or transwomen outside of the wealthy, may never be accepted as much as women who dress and act masculine or transmen even.