This is precisely what is being taught at plenty of Bible colleges and seminaries today. When I became reformed, I was originally Reformed Baptist. When I found out there was a Baptist Bible college 12 miles away, I was elated. I decided to attend. About two weeks before I started, I became Episcopalian, or, paedo oriented, to speak. I am 18 hours shy of finishing an associates at OCU, the college and seminary for the General Baptist denomination. To see why I should have been concerned, look here; GB beliefs.
I began a bit reserved, and I quickly found out I was not mistaken. This is exactly what was taught to us in Church Growth and Evangelism class. We are to 'meet' the world half way. Seeker sensitivity. That's just a code word for making the gospel second place to the feelings of the unregenerate. Perhaps this is where the 'gospel-less' sermon comes in.
Well, this only helped cement my understandings of what NOT to do. This group (off topic) is also very legalistic. I once commented that we could get plenty of people with a little beer and football, but was told beer was against sound Christian principles. Talk about confused. The problem with going down a slippery slope is that to get back to the top, you gotta ask somebody up there for help.......which admits wrong. The Church today looks more like the world each and every day. It is indeed, a sad state of affairs, but I refuse to look to the world for my principles of worship. May God keep us in His mercy and safe from such heresy.