Yes, if Petula Clark and Elvis had a sudden career revival, particularly among people in their 20s, 30s and 40s, that would change things. It ain't gonna happen, but it would change things.
Because most people who are in their 20s, 30s and 40s today do not like the music you like. Many of them will be totally unfamiliar with it. For someone who is 25 now, the 1960s are not even their parents' music, it is their grandparents' music.
I'm around 40, and will testify that I have no interest in any British invasion music, or Bob Dylan, or Sonny & Cher. I have no interest in anything that references the Vietnam War, despite hearing a lot of "Okie from Muskogee" growing up.
Similarly to you, I inherited some of my music preferences from my parents. We had a lot of MOR records, and country records that my parents bought before I was born. I like artists including Willie Nelson, Johnny Cash, and Peter Paul & Mary, largely because my parents or grandparents liked them.
But that's far from universal. My mom was a huge Elvis fan, but I never got into his music.