Can a PhD (Or a doctorate or an MD) choose to use a gendered title instead of Dr? For example, suppose an AFAB PhD comes out as a trans man. Is he allowed to use Mister to affirm his gender? Or is he stuck in the gender neutral Doctor zone forever? Does he have to get knighted by the British monarchy in order to get a masculine title?
Most people with Ph.D don’t use the Dr title out of a formal setting.
Between People thinking that you’re a physicianand asking about their health, and people thinking you’re pedantic. Better staying discrete.