It appears that rumors of ‘natural and beneficial’ wildfires in the southern Sierra Nevada have been ‘greatly exaggerated’. Even the Alder Creek grove, which was recently bought by Save the Redwoods, was decimated. Of course, this eventuality has been long-predicted.
https://www.latimes.com/environment/story/2020-11-16/sierra-nevada-giant-sequoias-killed-castle-fire