Your comment was better without that edit.

It’s an appeal to absurdity that falls flat because nuclear plants and oil refineries have been built near population centers in the US (including in California) without problem.

California had had more issues from under investment in industry (see it’s ancient electrical infra that lit the state on fire) than from collocation of industry and people.

Both of the largest ports are right in SoCal and that’s going pretty well. Building another one would never make it past the permitting stage in today’s California.