I recently moved to California. Before i moved, people asked me "why are you moving there, its so bad?". Now that I'm here, i understand it less. The state is beautiful. There is so much to do.
I know the cost of living is high, and people think the gun control laws are ridiculous (I actually think they are reasonable, for the most part). There is a guy I work with here that says "the policies are dumb" but can't give me a solid answer on what is so bad about it.
So, what is it that California does (policy-wise) that people hate so much?
I think this is mostly due to the highly polarized political climate. California is the most populous state and it's policies frequently end up spreading to other states and therefore is frequently focused on because if it's major influence. This is similar to how Texas and Florida are in the news a lot for their more conservative policies. While there are people out there who take the time to inform themselves and make their own decisions most people are only able to parrot back talking points they hear from the news or their friends. I suspect your coworker is one of those people and probably leans conservative so all he hears all day is how California's policies are making housing too expensive and it's too "woke" etc.
California (and Florida) tend to attract a lot of eccentric people. Also their politics lean heavily liberal and because CA is so powerful their legislation and practices tend to affect things outside the state. Like all the "This product has been determined by the state of California to cause cancer." Well meaning I'm sure but they are everywhere.