Meanwhile in certain countries people with an M.B.B.S. and no doctorate get use the title of “doctor” as a matter of convention.

Funny how physicians have basically co-opted the title even when they technically do not possess the degree it refers to. And even funnier is that that word doctor means teacher in Latin so it would make much more sense that those with Ph.D.s, who are qualified to teach at the highest levels, should get to use the title over physicians most of whom do not teach anything at all unless they are medical school professors.