Your first paragraph sets a tone for the rest of your article to be ignored. If you wanted to include that rubbish, you could have put it at the end mixed in with your conclusion.
The whole focus of blaming the youth of today doesn't hold water when you go back in time and think of disco and other pop music that has happened throughout the decades.
If you are going to say Coldplay is good mainstream, you might as well have said Nickelback is superb mainstream that belongs in that 2%