I find the fuss about putting "pronouns" in emails etc funny.
I am old enough I remember things like my teachers being very certain to make sure that we used the correct terms for them, and it seems it's just people carrying on that, but with a little extra.
I mean any form you have from years back would already likely have had at least 3 ways specifically to describe a woman and woe betide you if you used the wrong one to describe your teacher 40 years ago
I had one who made very certain she was known as Ms*, let alone the dozens of other descriptors that people put in front of their name (and god forbid you refer to an older Consultant as Dr, they worked very hard to become a Mr
).
It's even funnier when you've done English lit and remember that the whole "they/them" thing has been in use since Shakespear so it's not even something new fangled, it's something really olde that's come back into use.
Heck from memory I'm still listed as "Master Werewolf" on one of my bank accounts as I've had it since I was a child, and IIRC it was the option the bank teller used to differentiate between a young male and an adult one when setting up accounts.
As a couple of people have said, no one really gets offended if you use the wrong term by mistake, but it's polite to try and use the correct one, and if you are deliberately using the wrong one then you are the problem as you're ignoring basic levels of politeness (it costs nothing to be polite).
*She also used to teach me to address any letter to a company where I didn't know who would be opening it to "Dear Madam/Sir" or similar, her reasoning being that it was almost certain to be a woman that opened the mail initially as most secretaries were women.
