I‘m fully aware that you didn't say anything about hypnosis and everything what you have said so far is very down to earth, as I see it. I appreciate very much that, to me, you are one of the people who exactly know what they are saying or writing about.
I mentioned hypnosis to express more explicitly the degree of uselessness I attribute to those multiple Uke demonstrations (to my pursuit of inner power) in the context of budo. I tried to express a personal opinion.
I don't think this kind of demos are useless. They build in the minds of many spectators they are watching a very powerful person.
This attracts the ones seeking to have power and keeps away the ones looking for a fight, so it has some "martial" value.
BTW, there's a clip
of Ryusei Saigusa (Yoshinkan) performing various of these "tricks", including being raised by various uke and the group collapsing under him.