Only tangentially related but I think it's interesting that just as we popularized the word "Ms.", and I think it makes perfect sense not to refer to women primarily by their marital status, we sort of worked around the issue by... largely just not using title/last name anymore. Right? I don't think I've referred to anyone by a title since my grade school teachers, and at least in my industry and corner of society, i…
Since in my lifetime I've only known calling everyone by their first name (except, like you say, teachers in childhood), I'm curious when the change occurred and how.