Re: -set living standards back by decades.
On the subject of guys with donkeys. An interesting argument is put forward in the excellent "A Distant Plain" by GMT Games is that "irregular warfare" is, if anything, the most common form of warfare. Not just today, but throughout the whole of history. Nation states slugging it out, while obviously not unknown, is relatively uncommon.
Vietnam taught planners all over the globe, that to defeat the US, one does not tackle them in a standup fight. The west is not loss tolerant; and even with a 40:1 casualty ratio (or significantly worse), the insurgency can come out on top if it's prepared to endure.
Donkeys don't need petrol or diesel; don't need mechanics, logistical support, are relatively inexpensive, and highly effective even on the roughest terrain. Contrast that to moody mechanical steeds being bound to mostly good terrain, heavy lifting requirements, logistical overheads etc. Sometimes, the latest and greatest gadget really isn't what's needed. See also, Germany, 1939-45, pursuing technological panacea. Amazing progress made, but the outcome certainly from 1943 onwards was never in doubt; mostly because the Russians were able to absorb losses in ways Germany couldn't.
Information can and does help with tactical problems. But winning firefights does nothing to win a hearts and minds campaign. And low and behold history more or less repeats itself where lessons are not learned.