I am wondering why they felt it necessary to include this information. I mean if he had a record that included soliciting prostitutes, that would be one thing. This guy is a heavy drinking bum, but I don't see how that mitigates being attacked by a crazy b#$%h that has seen too many "Twilight" movies.
I think they had to provide the backgound on the victim, because the reader would be left with the nagging question:
Who the hell in their right mind sleeps in a motorized wheelchair in front of a boarded up Hooters?
Without context, it sounds like a frat house prank.