I agree. IMO most people claim music was "best" when they were impressionable youths. I grew up in the grunge era so my go to SiriusXM channels are Turbo (90's-00 hard rock) and Lithium (90s-00 Alternative). I'm always starving for new music but its hard to hear anything that can beat the music I grew up with and was so passionate about. Clearly we become more cynical the older we get.
It certainly doesn't help that SiriusXM and youtube/spotify/etc let us stay in our own music bubbles and never leave. Its the same problem social media and news outlets are currently facing. People want their own beliefs reinforced and they ignore or call everything else "fake"