Probably is a mental health problem, but I do deal with many older druggies many of them violent.
Druggies more likely to hug you than to mug you?
Utter sh1te.
He may well get sectioned, detained under the mental health act and then quietly released in a few years time.
I don't know the figures for recidivism in these instances, but, personally I feel that after an act like that you have shown yourself to be a danger to the public and should be locked away (humanely) forever.