Treat it like a name. You don't need to learn all of them but when someone shares theirs with you, learn it and what it means or it'll be very rude towards them.
To put it into context, it would be like everyone would be called Joe and Mary, which would be very boring.
Ah yes, more mental health care takes from people who chant "male female male female male female" in their sleep
Also, can we talk about the fact that this attack helicopter thing has clearly long passed "joke" territory and these people are actually just sad they aren't an attack helicopter?
I don't understand how it's transphobia. When you're trans you're just changing from one gender to the other M->F or F->M, right? How does this conflict with thta notion?