Oh hell no.

There's an entire new world of indie rock bands, postrock bands, and genre bending going on.

For example, if you want to listen to rap that's genuinely innovative, try listening to clipping. Two albums to look for are Splendour & Misery and Visions of Bodies Being Burned.

HEALTH also does some collaborations with rap artists. Here, I'm thinking of the song Judgement Night and Gnostic Flesh / Mortal Hell. Backxwash is one of the guest rappers on that latter track, and her albums are genuinely innovative too. God Has Nothing To Do With This, and Bury Me with My Rings and Dresses are like African roots (like Mali? Dunno where she's from) rap with heavy musical influences of 90s black metal bands, Alice Cooper, Black Sabbath and other metal genre.

There's always tons of genre pushing artists out there. Like when there were emo rappers all of a sudden.

Rock as a monolithic style seems to be gone though, I agree with you there. Alternative, indie, emo, punk, metal, and even ska seem to have blended together seamlessly into some new music. The good news is that it's fresh, and a lot of it's good.