Exactly as putting a dual wood screenfold can be damaging for the soundfield balance aspect if you put only that behind your ears... I know because i already used one ... but with many acoustic modifications on it and in the room ...
In fact this device is helpful for those with a slight hearing impairment... Not so much for audio listening as an audiophile experience as such...
This is nothing new, it’s very old news, and I think it makes the music sound unbalanced and strange.