You don't want them coming? They're already here. Most of the people that have moved to Portland in the last decade are Californians. And they brought their overpriced pretentious restaurants, high housing prices, and road rage driving with them. They're the ones paying $15 for 3 street tacos at some "see and be seen" establishment in the Pearl. Us natives hit up a taco truck and get better tacos for $1.50 a piece.^^This, I can agree with.
It's better if people don't try living in a desert but they have to live somewhere. I don't want all those bitchy Californians to come to Oregon. So, deal with it California.
Oregon's hazelnuts are better than your water hungry almonds.
But I have nothing against Californians. Keep moving up here. It just increases the value of my home. I've seen small 2 bedroom bungalows that sold for $110,000 20 years ago selling for over $500,000. I keep up on that stuff.