straight MTF's have a lot in common with gay men to begin with, there's always the possibility
that they were meant to be a gay man? Silly speculation
Maybe the gay men which don't act in this manner weren't meant to be gay men? Sillier speculation?
People who are different, and proud of it, often like to scream it at the top of their lungs.
Both gay men and transgenders are very different from the social norm, and it's easy to
elicit a response by doing so.
The idea of being "Lady-like" is something that started with conservative views about the fairer
gender, much of it being religious. A transwoman is usually too old when they transition, to have
been raised in that manner, and if they were young, had liberal, feminist, etc parents perhaps.
Boys are also raised to be achievers, to pride their accomplishments, and generally just "be crazy".
It's a far cry from traditional ladyhood, but it's not something that every transwoman just forgets.