Do you really think the average believer is that stupid, or the Holy Spirit that impotent to fail to glorify Christ through such activities? Get a grip. The God I serve isn't that fragile.
Here's a revelation: God doesn't need you self appointed deputies to run around and nitpick your fellow believers who are actually accomplishing something. Why don't you try loving a sinner or a backslider instead, and revealing Jesus to them? There are scores of lost people out there looking for something, and they don't even know what it is. The harvest is ready.
Ahh, but we are, we are. Warren does not preach the Jesus of scripture. Believers don't accomplish anything - it is the Holy Spirit who does the work. Yes, He can draw people to Him even though the words of false prophets point to man. It is His work, not ours. We are just instruments to exalt His name and not that of man's works. But I know you won't agree with that either. However, I will leave you alone before you continue to name call and other things.