Instructors are likely to get dropped by GUE for not being a role model. This includes personal diving - and extends beyond GUE. But that is between the instructor and their supervisors nothing student's need to worry about. Although more agencies should take GUE's lead here and remove poor instructors who can't follow standards or are poor role models for fitness, health, cave conservation, agency practices, etc. One of the worst examples was a North FL cave instructor who retained teaching status after a cocaine trafficking conviction. Sure he did his time but ughhh. Of course, there was another instructor with a robbery conviction, implicated in the death of students, who is now looking at 5 years in jail for selling CCRs to potential terrorists.... So it's a slippery judgement slope on the part of any agency on who to retain vs who to drop from the roles and for what behavior.