"us versus them", "blue vs red", "liberals vs conservatives"
Texas is the favorite punching bag of the left, and California is the favorite punching bag for the right. When one side is attacked, they defensively jump to the default. Which is kind of ironic, when you consider there's more Democrats in Texas than in many "blue" states, and the inverse is also true for California.
I can find many Republican representatives, Trump, and media personalities insulting New York with sweeping generalizations and hateful rhetoric.
The only negative comments from Democrat representatives and the media on the left I see is are critical of specific laws, for example abortion, but they don't insult the entire state or generalize.