This was a particular problem at my former church. Not so much with the congregation itself, but more in the youth program. The youth program worship music was very much a rock concert style, which like I said before, not a problem in itself. But that youth pastor was really about numbers and wanted the largest church youth program in the county. So the focus was being on cool and hip. The proof in the pudding was that my daughter would bring her Bible to youth and be mocked by the other kids. She took notes religiously (pun is unintentional) during the youth sermon and was mocked for it. Her youth leader not only didn't do anything about it, but she also participated in mocking my daughter for bringing her Bible and my daughter was called a nerd and worse. When we brought this to the attention of the youth pastor, he blew it off, saying that's just how teens are. Needless to say, my daughter ended up leaving youth, but thankfully, did not lose her faith. To this day, as a young lady in her early 20's, she does her daily Bible study before she goes to work.
Again, when the focus is on being cool and hip, it often comes at the expense of faith. Fortunately, we have since found a church that balances both.