I think people are looking for something that isn't there. My comments are simply based on this. It has obviously had some impact on his mental health wellbeing ?
Wow - not often you see things like that. Would have been easy for him to steal a wage and not put the effort in. But you don't know what else is going on with him or whatever kind of mental health problems he might have going on.
Sadly under Potter he didn't seem himself for whatever reason...