Rick Warren's church growth philosophy is not of God. It seeks to amuse the goats rather than feed the sheep.
1 Thessalonians 5:21 Prove all things; hold fast that which is good.
We have to judge all teachings by the holy scriptures and reject everthing that is contrary. C. H. Spurgeon noted the widespread lack of discernment in his day, and I believe today it has gotten worse, so bad that even many of God's people are drawn astray by vain philosophies. Here is an excerpt from one of his sermons:
In these days we are surrounded by unsettled minds, "Ever learning, and never able to come to the knowledge of the truth." These are carried about by every wind of doctrine. What numbers of professors I have known who go into one place of worship and hear one form of doctrine and apparently approve it because the preacher is a "clever man!" They hear an opposite teaching, and they are equally at home, because again it is a "clever man!" They join with a church, and you ask them, "Do you agree with the views of that community?" They neither know nor care what those views may be; one doctrine is as good as another to them. Their spiritual appetite can enjoy soap as well as butter; they can digest bricks as well as bread. These religious ostriches have a marvellous power of swallowing everything; they have no spiritual discernment, no appreciation of truth. They follow any "clever" person, and in this prove that they are not the sheep of our Lord's pasture, of whom it is written, "A stranger will they not follow; for they know not the voice of strangers."