He dropped wayyyyy too high to be effective, but with that wind there would be severe turbulence any lower. Even for a Hercules that flies in hurricanes.x.com
x.com
Tanker drops red water, only to have the wind totally disperse the drop.
Those winds make the use of aircraft pretty much impossible. Bes they can do is try to go wayyyy ahead of the fire, cut a fire break and try to soak everything down wind down. But as @jalimon said, that scrub brush (they call it chaparral, scrubland plant communities composed of broad-leaved evergreen shrubs, bushes, and small trees usually less than 2.5 metres (about 8 feet) tall. ) is extremely flammable and even some embers flying a few hundred meters down wind and it all starts again.