I'd like to see notes from someone trained in the observation and analysis of gender performance before agreeing that the transgender people you know are stereotypical in how they do gender--more than your say-so. That just doesn't sound accurate to me as an overall description in any way, including as a description of how my typical, non-transgender college student does gender. Many of them do it all-out. Are they not stereotypical because it is expected?
A lot of what you are saying is puzzling.
Honestly, you really can not understand why liberal politics might take up the cause of protecting a group of people in need of protection? I thought that was the "liberal" part of "liberal democracy," protection of the individual from the majority or some part of the majority acting through government.
More socially significant for whom? Rights for some are rights for all.
"Hard" and "soft" issues? Impotence? That's sexual, but not in a good way--a weird way--and doesn't communicate anything to me.
Not to mention the use of "XXX"--- three X chromosomes? Triple-X porn?
