Where I play, there is no such tradition as giving a point. If you loose, you loose, face it and move on. There is nothing very shameful in loosing. Maybe your opponent is in a different league and you are having a bad day, or just a very bad day. In my club giving a point when you are winning 10-0 could be considered rubbing opponents nose in your victory, like showing that he is unable to get even one point.
But that's not what I want to say. I want to say, that this action is irrational by itself and because of that you can't argue here. So what this action means is defined only by the tradition of the community. It can be an action of giving a respect in one place and it can be showing a disrespect in some other place at the same time perfectly.
So if i was the opponent of Harimoto (it would be nice, but no chances here
) and I was loosing 0-10 (it would be every time) and he gave me a point, there is a chance I would be insulted, but I am 100% sure that Harimoto did not want me to insult. Quite the opposite.
P.S. the video is unavailable...