I don't think Kay was claiming popular music is _universally_ tasteless; that would be ludacris. He's lamenting that taste is not important to music's popularity. That you could think of a particular example of developed popular music would seem to support the claim that pop music is, in general, undeveloped.
A lot of the most popular music has lyrics utterly devoid of meaning, simplistic least-common-denominator structure, humanity auto-tuned out of the vocals, and dynamic range compression crushing out subtlety for greater loudness. Taste IS subjective, and that's why the things that become very popular have to have very little of it.
