It's unfortunate that some might be triggered at the mention of hypnosis. Yes, I do agree that the basis for all hypnosis is self-hypnosis.

No one can talk you into something that isn't in your own realm to begin with.
Even those who used to volunteer to be on stage to quack like a duck, for instance, probably would do that at a party anyway, you know?
But it can be a good tool for someone to work with for himself, imo. By working with it on your own, you will never go over material you aren't ready for, not in the least, I think. That's pretty safe.
TC!