I went to visit him in the infirmary with my brother, mother and father back in the early 90's as a teen.
He was definitely a rockstar to most of the witnesses of my parents age group. I will admit whenm I first got there and he was babbling on and on about the glorious blah blah blah I wanted to leave. However he started speaking different languages and reaching out to touch people and have real conversation. He was blind so that was kind of creepy but he did genuinely want to spend time with people. I know he talked to his shoes etc... but he was a very very intelligent man that led many people down a deadly course but I do not believe that his intention was to genuinely cause peopple pain.