Honestly, that's the best way to live IMO. You don't necessarily have to understand something or adopt it for yourself, but it literally costs you nothing to show someone the basic respect of addressing them how they wish to be addressed.

My best man came out as trans a few years after our wedding. It took me a while to get her new name down pat, but every time I messed up I corrected myself immediately. The other day when she sent me a picture to show her progress on HRT I told her how happy I was at the progress my maid of honor had made and how much happier she looked. It's that simple: just call someone by their preferred name/pronouns.

I don't know, you'd be better off asking somebody who actually uses them. I just like the way they subvert common ideas about language and gender.

I feel like it's one of those things where you don't need to understand it, you just need to respect how other people want to be addressed. For reference, I'm a cis man. It's really easy to take for granted how gender affirming it is for me every time somebody refers to me with my preferred pronouns, he/him, because I've just never had the experience of somebody disrespecting that. I never had to justify my pronouns or fight for the basic respect of people using my preferred pronouns. The idea that anybody should be required to justify their pronouns or fight for that same respect that a lot of us take for granted is horseshit.