There has been yet another flare-up in various social media quarters about academic titles. There's not really any point in summarizing the details, because it's always the same moronic issue. But I will simply restate what should be obvious to any decent human being, but apparently has not registered with some of the prima donnas who have come out of graduate school:
Having earned an academic title does not give you the right to demand that other people refer to you by that title; it gives you the right to refer to yourself by that title.
For everyone else, referring to you by any title at all is entirely a matter of their choosing to extend the courtesy to you, on the basis that you have done, or could be expected to do, good to them. If it really matters to you -- and it sometimes can, for legitimate reasons, such as if you worked your way up from a one-room shack -- just ask them and tell them why it matters to you, and people usually will. Anything else is (1) rude and self-important jackassery and (2) self-sabotaging, because it makes you look desperate for recognition.
I have previously talked about academic titles in:
Evening Note for Saturday, April 6 (on norms of etiquette), which focuses on the courtesy aspect;
The Authority of a Title, which focuses on the self-sabotaging aspect.