Fuck off. This has nothing to do with it. He had Lewy body dementia. At first you are mostly your self and slip into dementia once in a while and eventually you are gone.
Robin killed him self because he did not want to become a vegetable.
All of this speculation about his death is fucking ridiculous when his best friend explained the situation.
Actually, here is even his wifes article on the desease: https://n.neurology.org/content/87/13/1308.full
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