A lot of people dislike Florida politics, state social policies and culture. It's very, very different from Seattle or Portland. Similarly the Floridians think people in Seattle are insane.

The "surrounding areas are red but" immediately preceeding implies that being largely Republican-voting qualifies an area as a "cultural backwater".

We get a disappointing degree of "people who disagree with me are stupid" here at times.

Could just be referring to a lack of concerts, nightlife, etc. If you're used to the frequency with which major acts visit LA or Chicago or Nashville, adapting to anything else can be hard.

To Californians anything that isn't California is a cultural backwater. This may also apply to New Yorkers. The amount of Californian "nationalism" I've seen is surprising.

Anything that isn’t coastal Californian you mean.