I saw an article the other day decrying the fact that less attention is drawn to the fact that most terrorists are incompetent boobs.
It occurred to me: their incompetence is their whole strength! Teaching people to be competent is expensive, difficult, and time-consuming. Relying on their innate incompetence is cheap, easy, and quick - and lord knows any given “competent” soldier can fuck up as readily as any given schlub (although a GROUP of competent soldiers will probably fuck up less often than a GROUP of untrained zealots).
I think this observation, more than any other, explains the extraordinary success of irregular warfare over the long term against vastly stronger conventional military might: it’s significantly cheaper, by several orders of magnitude, and it relies on human weakness instead of trying to transcend it.