I am about Joey's age. I kind of get what he means that a lot of the new music is trash. I think this is the first generation I'm starting to not relate to a much. A lot of different artists out here, weird and wacky.
Joey's comments made me think of this: https://www.hotnewhiphop.com/ti-backs-up-21-savages-statement-on-og-rappers-news.39844.html
Rap changed insanely from 2014-15 to now. I think maybe Joey is just in a state of shock. None of these new dudes or gals are his style.
IMO new rap music, in almost every new generation/wave, is usually criticized very quickly. Even by artists just a few years older than the current wave.
The way I see it rap always tries to break the mold in a sort of shocking way. Best example I can think of is Tyler, the Creator when he first came out. He had so many haters and fans and so much attention when the Yonkers video came out. There's a lot of other examples like him too. I know a lot of people thought Tyler was trash and was going to ruin rap or something dramatic like that. Kind of like XXXTentacion? maybe.
Like any genre you should probably be different in noticeable. Rap music is progressive in a very fast way. I think if you combine that natural fact about rap with the fact that we are fully in the digital/internet age, you are going to get maybe some wacky and strange stuff.
I think nowadays there is also a lot more people rapping than probably ever before. So I mean there's that. Everyone wants to be a rapper. Nowadays technically everyone can be.

Rap music is the music that fits perfectly in this internet age. New music can be pumped always.

Steem on. RIP Lil Peep and Fredo Santana.