Tell that to the Taliban, Iraqis, Chechen rebels, Vietnamese, Mexican cartels, the MILF in the Philippines and dozens of others.
Yes, indeed, it’s an utterly ridiculous argument that the American Revolution itself stands in defiance of. A handful of Colonists armed with various and sundry rifles and muskets in various states of age and condition, with uncertain and precariously guarded supplies of powder and a scant assortment of cannon took on the most powerful organized military in the world as well as their hired professional Hessian mercenaries.