I'm going to gently push back on both of those last two posts for a couple reasons: one, I love pop, and yet I love Emerson Lake and Palmer and King Crimson. I can't sight read music like Steve Lukather but I know enough about music to "discern", which is a word loaded with judgment and quantification. I find the argument that somehow "rock fans" have some greater insight into the music to be absolutely bullshit. I know for a FACT that there a handful of bands we love here and revere for their "accomplishment" that would give a couple teeth to have a song as big as "Wildest Dreams" by Taylor Swift, technical ability be damned (read the liner notes to the deluxe reissue of Holidays In Eden by Marillion; Hogarth damn well expected that album to be a pop/crossover hit). Two, the assumption that somehow "rock fans" care more is questionable. Anyone that knows a One Direction fan knows that when Zane left the group (was pushed?) "care" was too light a word. It was a scandal. Similarly when Nick Jonas (of the Jonas Brothers, who I've seen twice live, go figure) went solo, scandal.
And plus I don't get the connection; just because one appreciates the athletic accomplishment of a technically-focused
music more than say the connectivity of a song generally, or the entire the body of work, doesn't itself explain why that fan would be less accommodating of those athletes changing members in their band, for example, or deviating from a style. See the Metallica thread. They didn't all of a sudden suck at their instruments (except Lars, of course) but they're taking a lot of heat these days.
Another thing that's missed is that MOST BANDS progress in some form or fashion from the complicated to the simple. There are exceptions of course - Iron Maiden - but there are FAR MORE bands like Genesis and Rush, that hone their songwriting skills and are more rewarded by a song that connects with a broader audience than they are by a select subset cheering on arbitrary variables like "song length" and "complexity", than those that go in the opposite direction. Artists, at their heart, are nothing without an audience for their art. They are communicators. I think there's something to the notion that in pop, there's more of a give and take between the artist and audience, and the generosity of the audience reflects that.