He makes very good points and used appropriate and accurate examples to illustrate those points. Very simple actually.
Do you deny that charlatans have been making claims about supernatural powers for centuries and taking advantage of gullible people along the way? That's the bottom line in his talk. He is telling people to be wary of such claims so that they aren't taken advantage of. Surely there is benefit in that approach?
Or maybe my flat mind didn't quite get it? As far as you are concerned, what exactly is a flat mind anyway? Are you calling me stupid and/or ignorant as might be suggested by this chap's question?
Regarding the rest of your post, you do like to ramble on about this don't you? Let's look at your example of the shaman and the bones. You state that it is scientific. Strange, I don't see anything scientific about what you described. Probably my flat mind getting in the way again, but your example here seems to be the polar opposite of scientific to me. Can you clarify how what you described is, in any way, scientific?