I find that it neatly fits the thesis; "King of the Hill" is a delightful satire of the inhabitants of a sleepy Texas town, and it's clearly influenced by Judge's time in Texas the same way that "Silicon Valley" was influenced by his time in the Bay, and Judge himself has confirmed this.
I think that it makes coastal city folk uncomfortable to talk about and celebrate KotH because satirizing urban Texan values, beliefs, and practices is self-seen as aggrandizing city-slicker behavior.