Compare a modern popular track to an almost arbitrary Baroque piece, and you'll easily come to this conclusion.
OTOH compare a modern popular track to a modern jazz track, or certain complicated rock tracks (see Dream Theater for example), and you'll likely conclude that it's popularity of simple things, not simplicity of modern things, at work.
On the whole, no. However, there are recent genres that concentrate on things other than melody, with fan bases that aren't used to following involved melodies.
OTOH compare a modern popular track to a modern jazz track, or certain complicated rock tracks (see Dream Theater for example), and you'll likely conclude that it's popularity of simple things, not simplicity of modern things, at work.
(Edited: spelling.)