On a roulette-style adult video site you press a button and the system connects your camera to the next free member, usually someone you will never see again. Either of you can skip at any second. Filters for gender or language narrow the pool, but the person is still a stranger, and that is the point.
Nobody knows your story and nobody expects a second date. The same thing makes it risky: you know nothing about them either, including what software runs on their side of the screen.
So the honest summary is this. You can masturbate with strangers on camera fairly safely if you treat every match as public, keep identifying details out of view and leave the moment something feels off.