I haven't seen anyone calling transsexuality a delusion, only people examining the possibility, and people (who agree with the standard pro-trans positions on policy) declaring the question meaningless. The closest is knb's claims about autogynephilia, which look like an independent reinvention and are thus pretty interesting evidence. In particular, I haven't seen any claims that transpeople should be denied anything.

It sounds like you're offended when people ask "Is transsexuality a delusion?", not just when they say it's one. That's not good at all, for the obvious reasons that if you can't attack n idea you can never prove it, that politics is the mind-killer, etc.

I'm aware of Bad Things that can happen from simply asking questions - they tend to prime you emotionally, even if you don't consciously notice and have the best intent in the world (and even if you're a Martian and thus immune to this effect it affects onlookers). So if you see people sneaking in evil connotations, please complain.

But I'm trans, so if I (in particular, or along with all transpeople) am deluded, I sure as hell want to know.