Being as we can no longer drop atom bombs on people demolishing entire civilizations…... training locals is still a viable method of helping to control broken societies. It’s not as if every single ally turned like a rabid dog. There are always evil people. There are evil Americans shooting each other every day who were taught by their parents.. or their hunting club.. or their ROTC instructors.. There are Brits joining ISIL for Pete’s sake.. so what’s the difference?
To answer the question bluntly: No. Not all of them. Yes. Some of them. We can’t approach it as simply as “we’re training our future enemies”. That’s incorrect.. and too vague to be considered accurate.