Tropical weather and ocean access helps. A flat land with extremes of hot and cold, tornadoes and drastic divergences in daily temperature are more worrisome than being on the head with a Bible, personally.
Yes all that is geographically part of the Bible Belt:
Shitty extremes of temperature
Shitty hostile weather patterns
Shitty viability of opportunities as a result of ongoing talent drain towards the coasts with everyone wondering why its so cheap
Shitty isolationist mentality and nationalism to rationalize why their dystopian nightmare is okay
Shitty extremes of religion that were literally kicked out of Europe
Shitty public policy and services as a byproduct of the prior two realities
When people want to enjoy their money its an easy and hard pass on the bible belt. Social welfare states and full blown communist states by the water give you everything for free all while you can buy luxury in liberalized state planned economies.
A resort town in SE Asia is pretty nice; you also have to consider much cheaper services that you aren’t going to get in a cheap Deep South city. It has nothing to do with communism or Bible belts.
The Bi-coastal Americans in this article will take communism on a bankroll over the Bible Belt, take a hint