I’ve NEVER heard of anybody managing the chaparral. It just cannot be done. Nobody goes into the steep canyons to clear the zero value brush.
Big lumber producing forests can be managed, but not chaparral. The best you can do is cut fire breaks through it. The native plants in the chaparral grow as they see fit.
I was hiking the steep canyons on Mt. Umunhum today (near San Jose) - lots of chaparral, manzanita, madrone, live oaks, tan oaks, bay trees, sycamores, buckeye, toyon, pine trees, coyote brush, chamise, ceonothus, monkey flower, and sage — most are high-resin brush. None of any commercial value.
I remember it when the costal radar installation still had a dome.
The wild growth has had its benign low level fire cycle interrupted. It used to be a low grade fire would mosey through every few years.
Then the stewards decided that every fire, no matter how small had to be promptly extinguished.
Rather than never having more than a few year’s worth of dead brush, it was allowed to accumulate for decades.