Vertical shorts are usually where cymatics content goes to become wallpaper. This one is an actual build: plate, driver, tone source, powder, results, in forty-four seconds. Nothing is explained, but nothing is faked either, and the sequence is complete enough to follow.
The channel has a companion short showing a single frequency at 2480 Hz, which is a sensible way to publish the material — one clip for the build, one for the payoff pattern. The format suits the subject better than most: the interesting moment in a plate experiment is short, and the setup between frequencies is not.
Use it as a reference for the minimum viable arrangement of components rather than as instruction. If you want the reasoning behind each choice you will need one of the longer builds.