doesn't like modern day music

I'm not surprised. I'd say the overwhelming majority of artists from that era feel that way. This actually popped up in my YouTube "Recommended Videos" the other day...I sure do miss Tom Petty:

https://youtu.be/LNtM0azZ0nE?si=zJcg4PxBkI_z52dp

Also, regarding Keith Richards, there's so much attention paid to other things regarding him that it's easy to forget what a fantastic guitarist he actually is. He's so creative and really has such a great ear...great riff after great riff after great riff. He knows it isn't easy to develop songwriting and playing skills, so I'm not surprised that he feels the way he does about modern music (I think he's dead on the money with his views).

THAT'S HOW GRANDPARENTS ARE...THEY HATE THAT NOISE YOU LISTEN TO.

He's right. It sucks.