California is the victim of its own success. When there is large amount of economic activity anywhere, it inevitably ends up in people crowding there and causing the prices and rent to skyrocket. That could have been fixed with rent controls, however the pseudo-leftists you speak of did not want to vote it. This is the result.
There's nothing 'fake about Corbyn's leftism. He has a 40+ years of excellent track record in each aspect of leftism from left wing social policies to internationalism. He is the Clement Atlee that the English needed at this time, but did not deserve.