The stage after this is that you hear that an artists was the biggest seller of the year and you've never heard of them.
But more to the point, the bigger mistake that most people make is not in thinking that the pop music of today is worthless, it is in thinking that the pop music of their youth is the greatest artistic gift that was ever granted to civilized culture.
As an example there are actually people my age who religiously adhere to the faith that ABBA and Barry Manilow are good.