Music debates are as old as time itself. Back in the caveman days the older cavemen would talk about how the best music was rocks hitting the cave wall. The kids would be all about coconut music. Neither side was right. That's just how music flows. Everyone could use to be a little more open minded about what's good music and what isn't. It doesn't matter that your favorite band is better than someone else's. Unless your favorite band is your own band.
This picture is probably already happening at a retirement home somewhere. Arguing about music already feels tacky, but seeing these elderly people do it is especially childish. I guess it's true that there really is no such thing as an adult. There are just people who are older and people who are younger. No one knows what they're doing.