I think he ended up there because it was that or jail, however, as he was disruptive, he fell into the trap that still exists today: if they're disruptive, give them something to shut them up. From first hand experience of a mental health ward, if you appear to challenge an opinion or ask difficult questions, more meds come your way very quickly. The patients referred to Quetiapine as with "quit being a pain" as it was used as a behaviour modifier to make the staff's life easier.