Are you taking the case of sci fi novel as scientific evidence or actual ground to criticize a situation that is different from the one in the book? If you want to read a story in which a character is actually capable of shifting into most any shapes he want, and in which dysphoria is taken in account, you can read Singmire Haze > u > ...Not that it is an actual scientific work, of course.
It's quite usual for trans persons to be aggressive about pronouns, especially at the beginning of their transition, because they are in great distress, and their suffering is too much to handle to also handle not getting upset when misgendered. The suffering is real, but eventually it'll get better as they get acknowledged in their gender. I think it's up to the two sides to make efforts if they actually wish to communicate together.
Transpersons can totally acknowledge that it might be tedious to use the correct pronouns, especially when people have to change an habit they had for many years. It's been 9 years since I started transition and now I don't take offense in being misgendered when I know people don't know I'm trans or don't mean to deny my gender (it even amuses me sometimes). It's when someone will refuse to make an effort or try to hurt me by misgendering me on purpose that I'll take rightful offense.
On the other side, it's everybody's part to also understand that if a transperson reacts harshly to being misgender, it's because they're being really hurt. Correcting yourself, saying "I'm sorry" or "I need more time to get used to it but I promise I'm trying" are as many ways to appease. If you just get offended by the other's reaction it could be that you feel like your ego is more important than the other's pain? Always something to question.
So, as I expected, it's all about you not wanting to get out of your comfort zone because it's more important than the others' well being. As a matter of fact there are also people who aren't vegetarian by choice, they really have terrible issue digesting meat and it's not their fault, just how they are. If you want to compare with food, being transgender is more like having diabetes or being allergic to nuts: it's not a choice, it's just something you need to deal with.
It's not weird at all, dear! It was simply WHO you were. By refusing to acknowledge this new name, it really was refusing to acknowledge the real person you were, because it was what this name meant to you: "I've been given a role that was never meant for me, but THIS is me, this is my role, this is who I am and I want to share with you my true self, not a lie, not a pretense, not an expectation."