I recall from "It Was 20 Years Ago Today"---an ITC show that covered both the Beatles, around the time of Sgt. Pepper, and the social scene of 1967 [produced in 1987 to commemorate the CD issue of said album]---a music critic speaking, representing the classical wing: "Music is an encapsulation of time". And that's about the size of it.
As regards "Boomers", I'm in the center of that, born in 1955. The "Boomer" era extends as far forward as born in 1965. If you're younger than that, you're not a Boomer. Boomers are, for the most part, senior citizens, and soon all of the Boomers will be senior citizens. I can listen to modern pop music. I've seen enough of that guy's videos to know he's got a Boomer skew and Boomer prejudices. There's plenty of new stuff that I like, but there's no denying the pull of the past. Everything that is a recording is historical: It's only new the moment it's made. I doubt I'm listening to anything "new" as of this moment, my M.O. is to check out the next big thing a few years later. This comes from [in my previous life] obsessively buying discs of various sorts once they've made it to the used or cut-out bins.
The reality is, as we get older, we fill ourselves up with music of the past, and that past has a major pull on our musical prejudices. I think the pop garbage of my earliest youth functions the same way as pop garbage of this era does, as a way of irritating parents. The music of each and every era reflects that kind of "new" that the parents will hate. I guess I can embrace more music of the present than most folks my age in large part because I've never been a parent.
The Beatles, when they first arrived, were closer [historically speaking] to the Edison Cylinder than we are [now] to the Beatles.