I’ve not read this article, but I can tell you that the understanding of the power of music, harmony, rhythm, and frequencies are well known.
China had that understanding a few thousand years ago. They held to the notion that whoever made the music had tremendous power, and so therefore the structures and norms of music were tightly controlled. The ancient Greeks had a similar approach.
The communists/globalists definitely had the plan to degrade our culture and morale by imposing ugly art, architecture, and music on us. I had not heard of the Rockefellers having imposed A-440 on us as a problem, but it would not surprise me. I’d be interested in learning more about that thesis.
There is a book which covers spiritual understanding and mystical history of music for those who have an interest:
https://www.amazon.com/Secret-Power-Music-Transformation-Society/dp/0892810564
The very existence of harmonics and their correlation to the Fibonacci sequence indicates that there is a precise harmonic structure in physics.