Your points are all very well taken. I would guess that many people, particularly the "relatively uneducated few" like myself, obsess about oil to an extent not warranted by the vehicles we drive. However, the owner's manual does say that synthetics are acceptable, but gives no detail at all beyond that.
So, allow me to rephrase the original question:
Assuming hypothetically, just for the sake of argument, that good synthetics are better in some way than conventional oils, are there any specific reasons NOT to use Redline, other than the cost?
If the answer to that is "no," then the next step would be to the meat of the matter, which of course is substantiating the claims Redline and others make that their oils are better than dinos. (And bear in mind that it can get awfully hot in Georgia, which may justify the extra protection if indeed there is such.)
I do appreciate all input so far.