Hmm. News to me - I've never heard this before. Got any references on that? Annecdotally I can only think of one person I vaguely know who liked playing keyboards. Again annecdotally one of my parents is a professional musician so you'd imagine some of that would run off and perhaps I'd be more likely than the average to be musically inclined having grown up in a house full of instruments and music, yet I have absolutely zero interest or inclination.
Sure people listen to music a lot, but never seen any other connection beyond that?