If you’re willing to admit that they don’t really have self-agency at that point, don’t they become an object at that point? Like we would have no problem putting down a dog that bit a child, let alone a dog that blew up buildings. The only reason we’re so accepting of putting down the dog is its lack of human status.
In our courts, claiming insanity seems to give you a defense against crimes you’ve committed but also maintaining all the rights and privileges of personhood.
People have alleged that it was part of MKULTRA, but there's nothing to support that beyond allegations and some circumstantial things (e.g., Murray consulted for the OSS on a profile of Hitler during the war). There were also just a lot of unethical experiments done on people in the 50s and 60s.