I actually have always appreciated it because I have taken it as a level of world building beyond what is obvious.
Most all profanity in our language can in some way be traced back to a religious context. It would the make sense that on other worlds with totally different religious backgrounds they would use different cursing.
In fact his usage of this concept is so subtle that you can detect what characters are from the world and which ones aren't by whether they use damnation as a noun or an adjective.
This is exactly why Mat was so badly butchered at the end of the Wheel of Time: Sanderson doesn't have any experience of carousing to draw on, and prudish is spot on.
