I teach adults to shoot guns. Had one person ask me to use the “they/them” pronoun. I told them that everyone in the class has the pronoun “hey you” because I suck at remembering names. They/them/he/her” had no choice but to accept that since everyone prepaid for the class. Otherwise they/them was free to leave with no refund.
Seems to me that those who choose “they/them” have more of a problem with the math than with self-identification. It’s been said that four out of three people have a problem with math.