Most (if not ALL) of the the-old-music-was-so-much-better diatribes come from people who never listen to anything new.
Or they have a memory of some long-ago disliked song that can serve as a permanent basis for dismissing vast swaths of culture. I hear there is a man in Belmont, Massachusetts who has successfully hated hip-hop for over 30 years now, based on that one time somebody made him listen to “Me So Horny”.