There have been this type of advertising of wondrous goods since radio and music reproduction was invented.
I have a December 1929 copy of Amateur wireless that has lot of such adverts in it one is for an OHMITE brand resistor that is better than wire wound, noiseless and efficient so that the high notes are retained.
People have fallen for this sort of rubbish through the ages, my guess is it wont stop, someone will always buy.