If adequate prescribed burns, mechanical/natural brush and grass management along with proper fire breaks had been in place it would have been impossible for these fires to have gotten so far out of hand.
It takes a buildup of years worth of fuel to feed these fires.
I don’t know where you got the idea I thought otherwise. The fact is, there is almost no proxy temperature data from the vast majority of the planet. Every estimate of global temperature over a few hundred years ago is based on correlating the proxy data with current measurements at the same locations and then extrapolating those correlations to the rest of the world. But the temperature swings shown in the Greenland and Antarctica ice cores correlate well to current temperatures, therefore, there is a high confidence in the estimates of global temperature that based on those cores. You cannot simply reject the notion that the temperature history of that one core compares relatively well to the temperature of the planet of the world.
Each core produces multiple proxy temperature readings going back to the age of the deepest portion of the core. There has been no particular discrepancies found between the proxy temperatures from each of the hundreds of cores that have been taken. That is why scientists have such a high confidence level to use those proxy temperatures when extrapolating to estimate global temperatures going back hundreds of thousands of years. You are arguing a straw man to suggest that just because it’s only one core that the proxy temperature produced from it worthless when discussing the historical record of global temperature.