To yield like air in matters of musical styles (specifically "praise music")

The topic of "praise music" vs. hymns came up in our Bible study this week. In fact, I was the one that brought it up. We're studying the book of James and were specifically talking about James 3:17 where it mentions not showing partiality and not being hypocritical. Our Bible study book had a great quote on this: 

He "will yield like air in matters of personal feeling or interest," but "will stand like rock in respect of moral principle." -- C. G. Moule

One of the gals in the study piped up, "But now-a-days everyone is expected to be tolerant" as if it were automatically a bad thing. So I replied, "Yes, there are definitely times when tolerance is important." Everyone seemed to look at me like I'd sprouted a third eye and one person asked, "What do you mean? Can you give an example?" I gave a few, but the one I finally landed on was the preference some people have for praise music and the alternate preference that others have for hymns sung with their traditional tunes. 

I was rather taken aback when this led to an immediate response about how bad praise music is (We do sing a fair bit of praise music in our congregation, by the way.) and how it often involves singing the same line over and over again, such as "God is awesome, God is awesome." I said (oh yes, I did), "you mean like when the angels sing 'Holy, Holy, Holy?"

I won't get into the rest of our conversation here. That's just hashing over a rather discordant and painful time. But I would like to take on the topic itself. I did a quick search of R.C. Sproul's thoughts on praise music (since he was referred to by the person who was so against it) and I found an article that wasn't actually written by R.C. but by a guy named Gene Edward Veith. I found a couple of debatable points in his essay, which you can read on the Ligonier website, but I'd like to zero in on one specific paragraph, just in the interests of trying to focus on the topic and not nitpick on the tangential particulars. He said;

The question is not whether or not we should make use of contemporary music in church, but whether we should make use of pop music. By its nature, pop music is catchy, entertaining, and thus “likeable.” It cannot have much content, much less complexity or depth. If it did, it would cease to be pop art. The art of the folk culture, with its traditions and communal experience, has such things, as does the consciously-crafted art of the high culture, with its challenging content.

I'm not sure how all praise music got condensed down into being pop music, or along the lines of pop music, but I'm going to roll with that. I also don't agree that all pop music is catchy and therefore "likeable" but again, I'll slide past that to get to the next two sentences. "It cannot have much content, much less complexity or depth. If it did, it would cease to be pop art." ... Really? Is that true? 

So I ask you, is pop art a veritable wasteland in the realm of art/music? Can you think of any pop music (or perhaps just a contemporary "praise song") that has any depth at all? And how would you evaluate depth anyway? Thoughts?