I always look at it this way. So what?

What if I’m wrong and gay people are deviants? Well if I’m wrong, they get to live life like they want to. No problem there.

What if trans people are mentally ill? Well, we don’t stop boob jobs or tattoos, and if we’re claiming trans is ill then those are too. So no problem with that either.

Think of the consequences of your actions, and if those consequences are OK even if you’re wrong, then you can stop worrying.