I was born here in Los Angeles in 1949. I’ve lived here all my life because I love it here ... there is nowhere else that compares favorably.
But overwhelmingly, my neighbors come to Los Angeles from some other state. it’s always been like that. It’s still that way.
So if you’re complaining about Californians ... they’re North Dakotans, Idahoans, Texans, Arizonans, etc, etc.
You have nothing to complain about.
I ain't complaining about bupkis except that those who live in SoCal now are not folks like you...but transplants. Not all of them 'desirables'.