I’m a Boomer and there is no way that I would consider any era of music to be better than another. It is all in the brain of the listener. 95% of the Boomers that I know only listen to the same rock/pop/soul music that the listened to in high school or college. They might go to a classical music concert, but the they have no idea of any current music music is.
I listen to all sorts of current music in the blues, Americana, bluegrass, jam band, and Jazz genres. The people that I see at concerts include Boomers, Generation X, and Millenials. The new music that is playing at those concerts sound good to everyone at those concerts. The younger listeners have the advantage that they can better utilize technology to find the best new music and artists.