FWIW (and I know it’s not the joke…) it’s perfectly fine to remove the mouth piece while scuba diving. In fact it’s part of basic training. You should be able to remove the mouth piece and take another one, your octopus or the one of your buddy, in case there is an incident.

No… the real question for a good diver is how the heck you’re going to say HDMI 2.1 with hand signs! /s