TAG had problems with airstrafing (AKA bunnyhopping) on their low gravity servers. There is still no official decision on it and is generally left up to admins because most people use scripts (as you said) to do the timing for them. This came after a 20+ page forum thread arguing about how to actually do it, none of them could tell me straight up how to do it consistently even with airaccel set on high levels. All I was told was “go play surf and scouts/knives and you’ll get really good at it fast”. Having specd people for hours on end, I can say for certain that not many can do that without using scripts. We went so far as setting airaccel to virtually zero and still had them doing it.
My view is, and has always been, I catch you doing it in on a normal map (during the round) and I’ll slay you. It DOES give an extremely unfair advantage because it makes it much harder to hit you and next to impossible to headshot you.