Earlier quoted context omitted.
Vancouver is a real city. Seattle is provincial, passive-aggressive, unfriendly to outsiders, and segregated. A hick town with skyscrapers as I've often called it. Californians who've moved there almost unanimously agree with my first sentence, and crack up at the latter. (Sadly, I lived in Seattle for 17 years. The Bay Area before that, and New York now.)
It's really because we (seattlites) just don't like Californians very much; they are turned on all the time, shifty, and drive super aggressively. Makes sense that he feeling would be mutual (e.g. Too passive, naive, and drive super cautiously). This was a real thing in the 90s at least.
Personally I preferred the driver's mentality of the northwest and once I had been there a few days I drove much more like them since it was so refreshing to not have to not be in the take and defend mindset. Plus when you want to speed they get out of the way well in advance which is awesome when you're in a hurry.