I don't think you understand the way the law works in California. No matter how experienced a driver may be in snow, CalTrans and possibly the CHP will stop them at checkpoints to verify that they possess snow chains, and if that driver has a 2WD vehicle, they'll generally be compelled to install chains. Because of all of the people who are clueless about snow driving, the authorities tend to be ultra conservative, meaning they'll usually require chains when a decent snow driver wouldn't need them. While I find this to be a real pain at times (I have decades of snow experience), I understand the need to protect the general California public.
We are waiting on a Model 3 with AWD precisely so that we won't have to needlessly fuss around with chains to appease the authorities.