I’ll try:

OP is pointing out the cultural/political divide between the North and South in the US or just how the South is different from a lot of the US. They’re “foreign” to outside eyes.

Southerners treat Buc-ee’s like a religion almost with their obsession. Like some people get cultish about Chick-fil-a.

Ergo the symbol of Buc-ee’s, the beaver, is an idol of that foreign religion (buc-ee’s worship) as viewed from the outside.

The idolatry is a reference to Moses coming down from the mountain when he got the 10 commandments and all that to find people worshipping a golden calf instead of god. The South is very religious…or at least presents that image.

So a bunch of stuff happening in that short OP comment. Got the religious south worshipping a beaver for a store that people outside the south don’t know about or understand the cultish following it has.