Wow. Other than Metallica, I don't own an album by any of these people, and other than Metallica and Michael Jackson, I don't think I'd be able to name a single song by the few others that I do recognize the name. Oh, and I'm using the word "album". That probably explains it all ... :-)
You're using the word album, you're referring to "owning" music, and appears you're unfamiliar with any new music from the last 20 years. Time to switch to spotify.
While it's surely attributable to me getting older, my experience remains valid, and in my experience the overwhelming majority of new music is shit. I'm not completely unaware of Bruno Mars' existence and poised to be blown away when I sit down and listen to his stuff, because I've heard it, and it's terrible. The same goes for quite a few (but by no means all) of the acts mentioned in the article.