Was music really better "back in the days"?

I love 60s and 70s music, heard a lot growing up from my boomer parents. So many classic, timeless hits. Then my mum found some "Fab No. 2s of the 60s" CD, a compilation of songs that didn't quite make it to number 1...

It was truly awful, all clichéd cheesiness and triteness, so many lame songs that sounded like other, better songs. Just sucko-barfo all round. I think there are arguments for why music from the early stages of a genre (like 60s pop and soul) are particaurly good... But there's also a hell of a lot of selection bias going on.