It all depends on your niche. If your niche is ok with churn and burn it will work. I am running 3 c&b projects and 2 of them already getting enough traffic. If splogging works when door ways , side way sites works why churn and burn don't work?
I am not sure why people pulling leg for churn and burn.
Most replies just saying without doing tests. Churn and burn is not as used to be., But anyone thought how it used to be lol? Years ago users getting fail with SEO still it's same.
Test yourself. Never ask. Ask for the specific thing...not the whole thing. If you ask entirely you will get inaccurate answers.
-Source by my own experience-