You do not have to listen to what's on the radio or in the mass media. Plenty of other music exists. It is just a matter of accepting being spoon-fed with soup or going on a hunt for the thrill of discovering a unknwon trio from wherever in the world that has made some truly innovative or different music. It is just a matter of consumer choice, just with like everything else (food, drinks, books, movies, etc.)
Oh, I beg to differ. I don't have to listen to the crap at home, in the car, or in my headphones. But I'm assaulted by it during a few commercials, in autoplay videos, in movies, in bars. Luckily it isn't the fashion to play music in stores here like it was in the states: There, I got assaulted by it at work. For hours and hours. It was quite a blessing working nights and being able to turn off the freaking music.
But for the most part, you are correct. And all folks have to do is have a couple of listens to different sorts of music to get over the hump. After that, it becomes much easier to enjoy. I still listen to some mainstream or quasi-mainstream stuff at times.
Sidenote of interest: There was a small movement of surrealist rap.
https://youtu.be/kGVrCIzzoro