By turning off the sound until the slides came up I was able to tolerate this gentleman for almost the whole time. I especially cannot stand the hand-waving.
BTW, interestingly enough, although I study body language (it never lies), I have never looked up the official meaning of hand waving. Maybe because where I hang out nobody waves their hands like that.
In my opinion:
He sometimes gives either-or answers to things that are more complex and so those answers are, I believe, wrong. Some of the last slides appear to fall into this category and appear to contradict earlier slides.
I don't doubt that he is popular, and probably no person is harmed by following his advice. Misinformed maybe, but not harmed.
Can this gentleman sue me for libel? Only if he can prove damages, that people actually read what I post and believed me and he lost business as a result.
How do I know this?
Because an electrician on another forum defamed me all over the place, I knew what county he was licensed in and I seriously considered making an example of this disgruntled person by suing him for defamation & libel.
So I consulted lawyers, in return for any electrical advice they might need.
I find out that since he never posted my real name I had no case. He only defamed my forum name.
That dead dog story was an anecdote. Science cannot base itself on anecdotes, or on faith, or on matters of opinion, or on hearsay.
Maybe he likes dogs. He once compared stray voltages to stray dogs.