There are liberal Yankees and there are Conservative Yankees. I know that is hard to believe but that is the truth. I have zero stomach for a liberal Yankee
Oregon has been destroyed by the same thing..........except from
geographic south, rather than north. I've met a few very cool Californians, and call them my friends. They share my beliefs and moved to Oregon to become an Oregonian. I'm aware of thousands more who've fugged up a once very conservative, hard working, proud state. They moved here, then tried their best to turn it into California North.
I understand your frustration, and wish there was a realistic answer. But wealthy liberals invading in droves is an unstoppable force that will ruin State.