Every generation thinks the next generations music is garbage. Your take is that even the next generation thinks that their music is garbage.
Interesting.
People need to feel a part of something and I think that abstraction will apply every generation. Whatever that may sound like doesn't really matter.
What's funny is when hindsight comes back for some of those decisions or style/trends, but that only really applies after the younger people come in and make fun of what the older people were doing.
For some reason, it then becomes "embarrassing".
Nothing is really distasteful about anything if it's not harming anybody, but the fear of being left behind or not part of something can be heavy.
That's why some people get defensive about their past and why some people will always try to clout chase and sit at the kiddie table to the next trend trying to avoid that feeling - a lot of it is fear of shame or getting old.
Rinse and repeat.
People will look back at the screamo hip-hop right now and be embarrassed. Then that next generation will look back on whatever it replaced with embarrassment as well, etc. To the mass majority of people, music or style isn't really objectively "good", it's just time's antics (or how we perceive what time is).