I don't think many kids use radio hardly at all, it's almost 100% spotify, google music, apple music, youtube and sound cloud. Radio is for old people, and I've noticed over the years the top "40" has been shrinking to a top 15. As more people leave radio, radio keeps trying to cater to their smaller audience, and that audience wants very a very specific narrow selection of music. While you'd think that having millions of artists on a digital service would increase listening diversity, I think it's the opposite. The algorithms they use to suggest music is always based on the music you've already told them you like and won't deviate much from that. The popular music now is mostly vocal and electronic based, so you're not going to get many suggestions for music with long instrumental sections. This feeds into the first part of your statement, it's not that non-musicians don't care about music style but rather since the popular music styles don't involve instruments people see no need to learn to play them. Now for a related unpopular opinion (generally unpopular, I don't think this board counts as "popular"): I hate streaming music. I don't mind listening to stuff on youtube when I'm at home, but I like my mp3 players god damnit! Phones are already so expensive I don't want to wear out my battery even sooner than it already will be and I don't want to have to charge it 3 times a day. Since music streaming is now the most popular form of listening it's so hard to find a decent mp3 player. I don't want whatever music service tracking the music I listen to so they can sell my data, I don't want another company with my credit card info, I don't want them to tell me what I should listen to, I don't want to download a cancerous app that wants permission to read my text messages, I don't want advertisements in my ears or on my screen, and I want to actually keep the music I pay for! If you cancel your spotify subscription all the music is suddenly gone and you're left with nothing, screw that. I pay for it, I keep it for life; and based off reports anyone who isn't a current popstar is getting literally a hundredth of a penny in commissions anyways, so it's not as if I'm helping any bands I listen to by subscribing.