Piles of slash do not add to the forest fires and are usually burned the following year after they dry out.
But they can lop and lay, I believe is the correct term. Or chipper shred. They don’t want to do it because they it costs more money. Residents asked about it.
Ours is a very high fire danger area and I am 3 miles from the Slater fire and just got off of 2 weeks of Evac level 2. Piles of slash do indeed burn very nicely and the kinds of fuels that help forest fires spread and get bad, along with bushes, dead fallen limbs/trees, weeds and grass.