Here is ONE video of many talking about PS5 coil whine. It is not some sort of Xbox fan conspiracy. You can't blame this on Colt, Dealer or Phil Spencer.
I 'd seen that video before, but only just noticed that the hdmi cables in shot are the likely cause of the problem.
High quality hdmi cables would be far more rigid at those lengths than seen, and the braiding certainly would have the first few inches of cabling at the PS5 hdmi socket as a straight line or single direction shallow arc at worst - the crinkled cabling in shot just wouldn't be making life easy on either hdmi chip in the PS5 or TV given the data they are carrying.
The first of the hdmi cables, loops within a small area/tight arc, too and at the overlap has the cable shields touching - and despite all cables in optimal conditions of use being equally capable - a cable in curved use and poorly shielded working at very high bandwidth in game, overlapping itself could certainly cause issues the person is trying to capture.
When he went behind the back to the TV there was only one plug socket with a extension shown - seems a bit unfair to test without giving the consoles a separate wall socket IMO - especially as the tv cabinet looks like it houses a lot of equipment on those shelves, possibly overloading the single wall socket. Just between the console and TV the socket is probably delivering 500watts, and it looked like a soundbar is under the TV too, which could easily be another 200watts - excluding a sub and anything else connected.