In USA local authority is derived from the state, so ca legislature can wipe out the county laws with some small legislation. Ianal
Probably not a good precedent to set.
E.g. if their concern is the risk ruining views, then ban construction that ruins views, don't ban things you think may ruin views whether or not they actually do, while not banning a near infinite number of things that also might ruin views; if your concern is dust, then require plans and documentation that you're taking sufficient measures to prevent it, don't ban just some of the things that may or may not cause the problem while leaving the door wide open for other projects that would cause the same problem just because people aren't pursuing those other kind of projects right now.
[I keep fantasizing about "acceptance tests" for laws and regulations: Too often laws and regulations are set out based on totally untested hypotheses about their effects, but without any kind of process to review efficacy or side-effects, and with an inherent political cost to revisit an issue; imagine if all laws and regulations had to set out intended goals and define an objective set of criteria to measure if they meet the goals, and would automatically be suspended if they do not have the intended effects or have sufficiently large negative side-effects; it wouldn't stop bad laws, but it would at least document what the actual intended direct effects are]