Because of their demand to control what I say to them and because no one deserves the verbal abuse they dish out when people don't get their pronouns right.
Firstly, we all demand to control what people say to us. That's what names and pronouns are.
Secondly, again, you're trading on a stereotype. I've explained repeatedly that the vast majority of trans people won't "verbally abuse" you for not using their pronouns, unless it's deliberate. And if it is deliberate, why would it bother you if they verbally abuse people who do it any more than it would bother you if I verbally abused someone who spat in my face or keyed my car? And if it's accidental, why does the existence of some trans people who overreact upset you so much?
How important do you think you are that you believe can demand what words people use and then abuse them when they don't.
How dare people have preferences and expect people to respect that. You're right. That's totally a thing that is explicitly only a thing trans people expect, and not at all a thing literally every person does and has.
Why does it bother you so much to extend the exact same level of respect to trans people as they would to you? If they verbally abuse you for accidentally getting their pronouns wrong, then that's their bad. I fail to see why this is any bigger a deal than you calling someone by the wrong name and them giving you abuse for it - which is also a thing that happens.
My position is quite simple. This has NOTHING to do with who is or isn't or who should and shouldn't be upset about what other people say.
And yet you say above that your issue is that some trans people get upset when you use the wrong pronouns. I mean, clearly it has SOMETHING to do with it.
Are we clear so far? My feelings about someone misgendering are mine. I can choose to focus on them and demand people call me he, but why? It won't do me a bit of good in my life. If my worth is based on whether you call me he or she then I have much bigger problems.
I mean, if your argument is just "It doesn't upset me as much as it upsets them", then congratulations: you've realised that not all people are the same, and different people react differently to different things for a variety of reasons. Unfortunately, I don't have a prize for you. But rest assured, you have surely raised the bar for all of us.
So, I ask again, why do you care that some trans people get overly upset if you misgender them? Why does that upset you so much that you call them freaks?
Tell me honestly. What has any trans person ever done to you?