Wouldn't it be better to practice proper forestry and harvest the timber, rather than let it burn and release hundreds of kilotons more CO2 and pollutants into the atmosphere?
Besides which, sustainable fires (i.e. ones which don't, in the long run, substantially change forest coverage or makeup) are by definition carbon neutral.
Not when the rate of fires exceeds the rate of regrowth due to climate change.
We harvest from those forests currently — the problem is we harvest the big healthy trees because their wood is the most desirable. They're also the most resistant to burning.
The smaller, shade-tolerant trees that we leave behind are both less commercially valuable and more vulnerable to fire.