“Depends on if your a lubavitcher or a litvak”
So, if you’re a Lubavitcher the minhag is to “honor” other gedolim by not using titles and, if you really want to honor them, using insulting terms to refer to them. Meanwhile, people who spend 8 months in a Chabad kiruv yeshiva and get “smichah” get the title of Rabbi and it would be insulting not to refer to them as such?
OK, I think I got the minhag down pat.