Nik, I don't think people are saying the forests need to be logged, just thinned. The fires are so destructive because there is too much fuel for the fires that they're too easy to lose control. Setting fires for the purpose of a controlled burn is fine, but not if the whole place is a tinderbox and can't be controlled.
This article confirms this.
http://www.thenewstribune.com/news/local/politics-government/article25912591.html
While dry weather and repeated lightning strikes were part of what made the 2014 fire season so severe, the condition of the state’s forests also was to blame, Everett said.
“Our first line of defense is the condition of the forests,” Everett said. “Right now, our forests are stressed out.”
State officials estimate that about 30 percent of forests in Eastern Washington — about 2.7 million acres — need restoration treatments, such as thinning trees or planting fire- and insect-resistant ones. Government agencies, private landowners and timber companies only complete treatments on about 140,000 acres statewide per year, Everett said.
That has left many Washington forests crowded, filled with small trees and wood debris that fuel fires and make them burn hotter.
The densely packed trees also are forced to compete for light, water and nutrients, making them more susceptible to insect infestation and fire damage, Everett said.
Historically, small fires served to clear some of the trees naturally, but in the past century fire crews have extinguished many of those fires to protect nearby homes and businesses. That has left many forests overgrown and more susceptible to major fires, Everett said.
“The problem is we’ve taken fire out of the forest system in the past century,” said Peter Moulton, the state’s bioenergy policy coordinator. “If you’re going to suppress fire, you have to figure out some way to mimic its role in forest health.”
That’s where thinning and controlled burning comes in. During thinning, crews will typically remove small saplings and brush while leaving larger trees that are more fire-resistant.
A 2012 assessment from Oregon’s Federal Forest Advisory Committee found that every $1 spent on forest treatments such as thinning potentially avoids $1.45 in fire suppression costs.