People have been decrying the End Of Rock As We Know It for decades.
I have never believed in a binary segregation between what's rock vs. what's pop (or country, or hip-hop, or whatever) ... to me these things exist on a continuum. Bands and solo artists often move along that continuum during their career, or even from song to song. Purism is boring. It's true there's not a lot of new radio hits that I like nowadays, but that's normal for a guy hitting middle age. And radio music has usually been mostly terrible with a few great songs sprinkled in, that's nothing new. I grew up in the 70s, for god's sake. Top 40 was often HORRIBLE back then.