For me most of today's pop fluff is just that. There is a lot of flash and no substance. As JW would say, it's too perfected. Autotune, drum loops, pitch correction. It's taken the human element out of the music. It's sterile. And lets not forget how physical image has overtaken music and as long as you look the part, they can make the voice "good" by the computer. It's all about looks these days and image and cheesy lyrics. Gone IMO are the days of good pop music and good mainstream music. You have to go underground to find music that really has substance.
I'll probably get flamed for it but the Bieber's, Cyrus's, Swift's, and whatnot of the world will probably not last the test of time IMO... I hate to put Taylor Swift in that category but I get so sick of her writing a song about every breakup and every person to rub her wrong and her attitude. She still has some growing up to do. And the whole drama act she does. Bieber to me is a celebrity thug. Sounds harsh but it's true IMO. If he weren't famous he'd be in jail right now. And Cyrus is just going through a "any press is good press" and crazy phase to try to gain attention.
The days of great chops and being all about the music are on their way out, if not "Already Gone".
Call me a classic rock purist if you wish but we'll see how this music fares against the classics in another decade.