2 points
Whether you see it as brainwashing or principles is irrelevant when they’re still capable of effective military resistance against superior nation-states.
If anything, you’re right; people who are ideologically driven for their cause are the bane of a professional army; ideology is much cheaper and much more motivating than a paycheck and promise of a cushy pension.
Ultimately, it was their resistance and their lives that were irrelevant. America got their oil and the CIA got their opium fields. It was no longer worth the cost of keeping American troops there. So, they pass on the burden of protecting their stolen assets on to the native people. Its textbook neo colonialism.
Call that a loss if you like. Some people won big.