But I will admit I definitely don’t get it. I can’t imagine feeling so strongly about my gender I’d want to change it or be upset if I was misgendered

That’s quite normal for cis people. First of all it is quite difficult trying to explain what “being trans” feels like and since cis people usually have no experience that goes into the same direction as the ones of trans people (I would start to doubt if someone was cis if they could relate to our experiences) its almost impossible to truly understand us. However, you dont always have to understand something to acknowledge that people have different experiences and therefore different needs.

I wish quite a lot more people would have a similar mindset to yours.