Yes, whether people realize it or not.
More specifically, he is describing Newton's 3 Laws of Motion.
Well, it's an introductory video. He may or may not be able to go more in depth in another video or class. Here Michael Page covers creating impact (action/reaction), momentum and head on collisions which follows Newton's Laws of Motion. (In throwing, the impact is the ground.)
However, there are MAists that advocate block, trap or pull, then punch which can reduce the force of impact and cause other issues. There is a difference in impact force and timing. "Don't chase hands, chase the center."
Yes,
some may be using physics more for marketing, others not. Jeet Kune Do takes a physics and scientific approach to their pursuit of "absorb what is useful."
However, guiding principles can be useful. Robert Chuckrow writes about tai chi and Newton's Laws of Motion.
Excerpt from "
A Clarification of “Secret” Teachings Revealed by Cheng Man-ch’ing:"