That sounds like what they did at the Getty Villa and it seems to have worked. The one planning criticism I have seen that seems to have some merit is the question of whether regular controlled burns were being prevented by environmental regulations might have helped here.
There is some truth in here in that a lot of rich, influential people are going to get pissed off and seek change, but Carolla got community-noted because the Pallisades actually majority-voted for Caruso and Malibu residents don’t vote in the LA mayoral election.
As others have noted, the problem is just that there are some areas of the country that are prone to periodic catastrophic natural events, and if you build houses there, it is just a matter of time before they become at risk. See all the $10 million houses getting built on barrier islands on the east coast when hurricanes come along. SoCal has ecosystems that evolved in the context of regularly occurring burn cycles over millions of years. If you build a home in a canyon that doesn’t get a lot of rainfall and there are regular seasonal high winds, fires are going to happen periodically.