imo it also means there IS something special and powerful about men— it's just that trans men prove the source & application (+ reception) differs radically from the norm. we're aberrations proving both that cis people don't hold the keys to manhood, nor do we need them to open the door.
There's a transmasculine version of this. If someone assigned female can become a man, it means there's nothing so special or powerful about men.
Each of us has the biological truth of equality between the sexes within us, as demonstrated by the ability of some to pass from one to the other.