Gary Ablett is a dysfunctional human. A bad human in a lot of ways. Yeah, he's hurt people. Consider Alisha Horan's death for a moment though. I think the official story is that Alisha and Gary were having a session, Gary brought heroin to the session but told Alisha that it was cocaine because he was embarrassed to be a 'smackhead'. Alisha went to the bathroom and Gary nosedived into the bag. Alisha came out, saw what Gary was doing and wanted some. The court accepted Gary didn't mean to kill Alisha and so it was not a case of premeditated murder.
https://www.theage.com.au/national/revealed-what-took-place-in-the-hotel-room-20030301-gdvaz6.html
Me, I think the above speaks for itself. Two consenting adults got f*cked up on a cocktail of drugs. Yes, Gary lied about the nature of at least one of the narcotics present. This is manslaughter at the very WORST.