Is your definition of boomers “members of the baby boomer generation born between 1946 and 1964”, or is it “everyone more than 5 years older than me”?

Or do you not live somewhere in the anglosphere?

I’m not saying everyone born and raised in the anglosphere between '47 and '64 know who John Lennon and Yoko Ono are, but almost all of them do.

The Beatles and the events surrounding them are among the foremost cultural touchstones of that generation.