Man, you must be a paragon of transexualality to know what all the trans people want!
You are the one who made sweeping dismissive value judgments of all people who have preferences not to shower with someone of a different biological sex.
I just tried foolishly to get you to show an ounce of intellectual consistency
In reality, trans people are fighting very hard for the simple and understandable right to be identified and classified as their perceived gender.
Great, so their preference is to have people (including themselves) as classified by their self-perceived psychological gender, which is no less a sign of an "immature fuckwad" (your words) than other people who want to shower with their own biological sex more than with people who share their gender identity.
They don't want to say 'eek! A penis', they want to say 'quit pigeon holing me into "man", I'm a woman, get over it'.
IF they have a penis, then they are not biological females, no matter what they want to claim, and refusal to accept that, when it comes to showing and nudity, biology matters to some people just as much as their gender identity matters to them is selfish, close-minded, and hypocritical.
If the changing room isn't a battleground in the fight to be accepted as their perceived gender, if it isn't yet another reminder that their body isn't what they feel it should be, then the issue goes entirely away.
Bullshit. The labels on the rooms refer to biological sex, not gender roles. The labels cannot plausibly refer to both. It is highly likely that many transgenders want separate locker rooms, they just want them divided the way they prefer, by self-labeled gender role rather than biological sex. They and you myopically and hypocritically view their preferences as perfectly reasonable and valid while others' preferences are not. Changing in the men's locker room means that you have male genitalia, it does not define what person you are, say anything about your gender or lack thereof.