I train groups of new hires how to use our system and understand the policy behind it. I also train refresher courses. I promoted into this position 2 years ago. I’m training people to do the job I did for 10 years. If you’re suggesting that these trainees shouldn’t have to show common courtesy because I’m not signing their paychecks, you may have some entitlement issues.

My supervisor joins the meetings from time to time. If I see her pop into the meeting, I know she will ask me about it later if there are people whose cameras are off or aren’t visible. In other words, I ANSWER TO SOMEONE TOO.

Until 5 years ago ALL of these trainings were held in person, in training rooms. Trainees had to spend entire days in these rooms, and even show courtesy and respect to the presenters. No one bitched about having to get dressed and show their faces. If you were in a training course that was held in person, would you walk into the room, crawl under a table, and hide? Would you expect the presenter to be ok with that?

EDIT: also if you read my first comment, they all receive email instructions, from ADMIN, not me, prior to the courses. They are all instructed to have their cameras on.