You may wanna read up on honorifics [0]. That stuff is cultural and you'll be persevered as unprofessional or even non-trustworthy by failing to properly use it.
Devil's advocate: They'll also "survive" being "misgendered." Maybe embarrassing/rude event, to be avoided if possible, but not everything has to be "systemic -ism."
[0] https://en.wikipedia.org/wiki/Honorific