Lots of gray areas in California.....If there's horses or cows on a property, you can bet the ranch there's salt licks.....There will also be artificial water sources, and in some cases feed..... In theory, some of those places are probably illegal to hunt per the letter of the law.....Despite being on private property.
IMO.....If we were allowed to give feed/nutrients in the off season, we would have more and heathier deer (bigger antlers too).....Remember, our deer in SoCal are very whitetail like (most live in a 2 mile radius their entire lives).
ps.....I'm not a high fence guy or shooting next to a feeder guy. But, I don't knock it either.....When in Rome, do as the Romans do.