It's not courtesy if it's non consensual, same way that wealth redistribution isn't charity
I truly don't understand what you are talking about. When I was in primary school, and perhaps in no small part due to some prosopagnosia, I was unable to determine the gender of my peers reliably. This occasionally resulted in violence as I misgendered peers.
Do you live in a part of the world where you can use whatever pronouns you want on people?
If no, what exactly are we disagreeing about?
standing for
Can you explain what, exactly, it is that you're standing for?
There's nothing to feel, these people are neither male or female and would indeed deserve a specific pronoun, but pragmatism would make it as logical as making all cars fit for one-armed people
That's why they generally choose one or the other? Occasionally, someone will prefer a "non-standard" pronoun but I have never faced someone that didn't accept "they" (which, by the way, was my coping strategy in my childhood - when in doubt, use "they"! This was in pre-internet era of regional Queensland, Australia, where we barely had dictionaries, let alone knew what a pronoun even was)
You've obviously put a lot of energy and thought into this issue but I'm not exactly sure what the issue /is/