Tl;dw
I can say this, there will always be new music. It's been happening ever since the start of time. Mozart, Jimi Hendrix, Led Zeppelin, Metallica, Stevie Ray Vaughan, Justin Bieber, Deadmau5, and so many others created different styles and newer music. And these are just the popular ones, go underground and you'll find way more in depth, personally a fan of Avant-Garde, but no matter what music is an evolution. It will always change, and people will hate it. People hate change, whether they like to admit it or not, but they can't stop it, nor should they.