Well, I do have a spare with me (Signature-spare in the stock location) and tools to change. But I also always carry chains and could easily tie up a rear axle if needed. That is a really quick way to get going again, assuming you are not heavily loaded and are not going too far.
I do get the point(s) though and some people in some situations are better off with duals.
I do get the point(s) though and some people in some situations are better off with duals.