When I commented that Maurice is a harmless old man, by that I mean I do not think he is a danger to society such as causing physical harm or arson. On that basis I felt there were alternatives to a custodial sentence. I do agree he is very angry and agressive in relation to his cause, which is rather like Jandyce v Jandyce, as others have stated he needs psychological help.
I would add that CEOs, lawyers and the police have some of the highests rates of psychopaths, yet we do not lock them up.