As I said, it used to be fine. A bit strange perhaps for English viewers, but he just did it now and again and was barely noticeable.
This hand now turned into he constantly doing it as it's he simply can't stop himself.
It's as if he simply does not know what to do with his hands, and he's developed this habit that's gone too far.
Unless, as I say it's some body language coach who thought it looked cool, and is simply telling him to do it all the time now as they think the audience love it.
I'm now finding it really distracting as I'm watching his weird hand movements and taking my focus away from what's being said.