It is a fact they they experimented with mind control, not that they accomplished it. Not according to any evidence I've seen.
My point is that focusing the conversation like this never does anything to address actual problems. The most likely scenario is that he simply should have been in an institution sooner but wasn't because we don't do that anymore. Plenty of mentally ill people hold similar delusions. That doesn't make them true.
I see many cases like this and I'm not helping them or anyone else by indulging CIA delusions, even if I agree that the CIA is disgusting and should be abolished (I do).