If those dead trees don't burn, they'll all fall, creating a horrible, jumbled mess. The only thing to do with beetle-killed trees is to remove them, not that the greenies will allow it.
There was a big blown down near Steamboat some years ago.
The predicted happened.
The huge pile of dead trees caught on fire, polluted the air with smoke, then polluted the water supply with ash, then killed the fish and other wildlife, the fire got so hot it killed the organic soil...
The harvested value of the good trees could have paid for any clean up. Instead the taxpayers got stuck with a big fire fighting bill.