This topic is a minefield, because there's no right answer or formula. God plans every church to reach a different demographic niche, so that between all the churches all potential Christians get reached. On the other hand, this attitude can be taken to such extremes that the niches become un-Christian -- i.e., a "church" that consists of people of all the same income, education, race, marital status, etc., etc. Surely God wanted us to be a family, and families are by nature multi-generational, multi-income, multi-educational (and these days, often multi-ethnic as well).
I have always said that the right way to maintain a true multi-generational family is to have blended services that harmoniously incorporate (as opposed to tokenism, or paying lip-service to) multiple styles of worship. I seem to be in a vast minority amongst church musicians in this, for I'm told that the multiple-style approach pleases nobody and alienates everybody. Sometimes, yes, but it depends on the congregation. I am now so so so so happy and fulfilled to be in a congregation that shares my feelings and appreciates anything I do. The team sings 19th century hymns, the congregation loves it. The team sings Hillsongs, they love it. We do Southern gospel, they love it. We do Victorian parlor-music, they love it. The success in this congregation never reflects the style of the music, but the relative power of the anthem's message. How blest I am to finally be in this situation!
But for congregations that haven't reached that point, or that don't aspire to reach it, you can't criticize them if it bears fruit. For example, I sometimes attend a very contemporary Sunday evening service at a church in a very rich neighborhood of Connecticut. The music, albeit performed by excellent musicians, can be excrutiating -- all rhythm, no melody at all, trite lyrics, limited subject matter, much more extreme than Hillsongs United. When I find myself hating the music there, I detach myself from the song and start to pray. No, not to pray that they will stop using such junk in church, but to thank God for using this music to reach people who wouldn't be in church otherwise. I look around at the hundred or so teens who are there and I say to God, if this is what it takes to make these kids comfortable in church and to be receptive to hearing the Word of God, then I thank you for using this method to bring them here. (Incidentally, the Word preached there is very solid -- explained in a way they can understand without jargon, but with all the convicting traditional Protestant doctrine put straight up front.)
Back to the title of the article, of course NO kind of music is a "fix all". Music is merely a tool. In the end the Word is the purpose of the service, and music merely helps that goal. If the preaching if feel-good, unconvicting, no-pain/no-gain, then the church is terminally ill no matter how financially sound it may be. I've also seen churches where the Word preached is outstanding, convicting and powerful, and yet the congregation is deaf to it -- very common in rich White neighborhoods, but not unknown in poor minority churches as well. Music can't "fix" that.
Back to the title of the article, of course NO kind of music is a "fix all". Music is merely a tool. In the end the Word is the purpose of the service, and music merely helps that goal. If the preaching if feel-good, unconvicting, no-pain/no-gain, then the church is terminally ill no matter how financially sound it may be. I've also seen churches where the Word preached is outstanding, convicting and powerful, and yet the congregation is deaf to it -- very common in rich White neighborhoods, but not unknown in poor minority churches as well. Music can't "fix" that.