Not sure where I stand, but interesting thread, especially on a sex website. Many threesome reviews extoll the lesbian interaction of female participants and many complain of the lack thereof. Somehow it differs when the male gender becomes blurred....I'll admit to a degree of homophobia myself.
Random thoughts:
I think we're spending a lot of time fretting about a relatively small group of the population that may be better spent elsewhere.
There is a difference between cross-dressers, transsexuals, bisexuality and homosexuals and one opinion doesn't necessarily fit all.
Personally, I don't care who uses a public toilet with me. In the 60's with women's lib, it was common for a female to use male facilities to prove a point...of course I'm a guy and not sure the converse would have been well received.
I don't think it wise for minors to receive irreversible sex change therapy even with parental consent (note irreversible). Too much can change, but once of age, then it's their decision.
I'm not a sports guy, so sue me, but IMO, too much emphasis on winning at the ElHi level and not enough on the satisfaction of simply participating. Olympics, college sports might be different and restrictions based on hormone therapy are OK by me.