Spicerack - // It's also a very common expression in the lowly circles I move in. //
I worked with telephone engineers for over forty years, I've probably forgotten more horrible expressions than you know - but it's about time and place when you use these expressions, and when you don't.
// No sympathy because, if he did the things he was reported to have done, he's a disgusting freak. //
But he's probably a mentally ill 'disgusting freak' and does that not attract any compassion in you?
// He had zero sympathy for his prospective victims. //
As I said, contaminating food is not the actions of a rational mind, so I doubt he had any rational concept of the consequences of his actions.
That's what some mental illnesses do - and I think we as a society are required to accept that the dreadfulness of the action should not be bracketed with the unwell mind that carried it out.