Hand thing must be true ...
Message:
...Don't forget talk with your hands! Looking like you're air-cupping boobs or waving away gnats, for some reason, reads as being animated and excited about your topic....
It's video so something has to move or it's not video.
The green screen thing where they flash fast to a slightly more legible image apparently makes people happy. I couldn't read either image ... but ... it moved.
A big head with a pleasing smile is well known to sell biscuits and such. Spastic flippy flipping the product is apparently motion too.
The other choice is the crap on NBC. Get off my lawn.
Yours,
IronConrad
21-Oct-2020