Twenty years ago rock was a living genre instead of something on life support from old geezers and rap and hip hop weren’t default music, rock was. Country has also gotten way less Christian and again, much more rap and hip hop influenced. If you listen to a years worth put number ones from 2002 it does not sound like 2022. The difference isn’t as great as 1960-1980 but “roughly the same” it is not.
The bro-country that has evolved (an iota) into the snaptrack country is basically unchanged since ~2012. The hick-hop influences are much different than Garth and the other 90's influences, of course, but they are unchanging mostly. For example: both Kasey and Taylor got their start in that sound (kinda), but quickly moved on.
For me, internet streaming saved country. The neo-rebel country you can find online is much better than the radio, to me at least. Acid-country, IPA country, Texas music, whatever the hell John Prine is, etc. are all online now and at shows (were, hopefully we can get shows back again). Granted, it's not as profitable (cheap and fast).
The Nashville Sound has been, is, and will be the same: ca-ching, ca-ching, ca-ching.
As for rock, I'm glad that it's been left behind. We're starting to get really good rock again as people looking for a buck have left and the enthusiasts have stuck around. At least, that's my feeling. Rock, as well, is splintering, but in a good way. It's become more international and those influences are fruitful. The artists are smaller, but the good ones that have made the digital transition have a deeper support network.
I am no music buff and I do not follow the genre, but I feel 20 years ago sampling was much more relevant than it is today, while now it's mostly bum-chuck digital bases.
I make more of a new wave style sound - things like Thomas Dolby (she blinded me with science) and Gary Numan (cars), using synths to make something totally different. Hope this kind of creative stuff gets more popular.
My album: https://lostastronaut.ca
Vaporwave - a brief history https://archive.org/details/Vaporwave-ABriefHistory
https://www.youtube.com/watch?v=3_qE6RrkgJA
(Which, for those who don't recognise it, is a cover of a mid 70's Blue Oyster Cult song: https://www.youtube.com/watch?v=Dy4HA3vUv2c )