No, I am correct. The Hypex and Purifi PSUs and modules are CE approved. So are ICE etc. Whilst of course its not impossible for a manufacturer to completely screw things up, the fundamental components are fine and tested. You are extrapolating and generalising. I have no doubt some badly designed and untested SMPS ar class D amp
could cause problems, but this is true of
any product.
BTW I used to represent Keysight products and used to sell RF spectrum analysers for looking at precisely this sort of thing (yes I know what a LISN is
)