If these people are co-equal citizens, how and why are they ‘vulnerable?’
Such a term is actually an unfounded accusation that feral normal people will tear transgenders limb from limb. As we have seen time and again, the already mentally ill are most likely to commit offenses from the mundane (theft, vandalism, public disorder) to the sexual/personal (molestation, grooming, pedophilia, voyeurism, etc.).
If they’re “vulnerable,” it’s their own doing. For cripes’ sake, if you’re a man, use the men’s can. If you’re a woman, use the women’s. If you’re a man in drag, go to the bathroom before you go out in public. Better yet, seek help for your mental illness and quit inflicting it on all of us, then insisting that WE’RE the ones in the wrong!