When The Dog Is Treated Better

Two people are walking the streets of their neighborhood. Lucy is walking her new dog, and Dave is out for his evening stroll.
"Hey, Dave!"
"Hi, Luce! Is that the new pup? She's sure a beauty!"
"It's a he, actually," Lucy corrects, smiling. "His name is Jack. And aren't his markings cute? I lo--"
"No, no," Dave interrupts. "That's definitely a girl dog. Jack must be short for Jacqueline. I know a lady when I see one. ...But just to be safe, let me see her parts."

I could go on, but isn't that ridiculous enough?

No one questions a dog owner when they correct someone on their dog's pronouns or assumption of sex. They assume, 'Oh, they know the dog better than me. Obviously they're right.' And then they usually apologize, correct themselves, and use the right name and pronoun from that moment forward.

Now, I think it's safe to say a human being knows themselves even better than a loving dog owner knows their pooch.
So why are transgender and non-binary people routinely subjected to people using the incorrect pronoun or incorrect name, even when the person has already been told that's not the right form of address?

Why are people questioned about their gender or, worse, their 'parts' at all?
Questioning someone when they tell you their gender is insulting on a few levels.
Asking about their genitals is flat out invasive.

It's fine if you don't understand the concept of gender versus sex or why all of "this" is such a big deal.
I mean, personally, I don't understand a word of Chinese.
That doesn't make it any less of a language and it doesn't mean I can dismiss it as a language that isn't used.

~Liss