“From Indian POV NAM was not meant to be anti-American organization (even though later on India herself turned very anti-US for obvious reasons).”
That’s like joining a secret society and naively believing that your joining serve’s YOUR purposes, and not those who founded the society and pull it’s levers (behind the scenes); those who benefited in their agenda by you joining, far beyond any direct benefit (other than benefiting your fantasies) to yourself.
......And you accuse me of psychobabble.
India didn't join NAM. India founded NAM. And looking back.... yes it DID serve India's purpose. India preserved her sovereignty, strategic & political independence and successfully kept both superpowers off her turf. That was a huge benefits. As for your claims about Soviets pulling lever and benefiting from the agenda, I don't quite see any of that.