I think it’s because with substance abuse, a person’s body is literally physically dependent on the substance. They can’t just quit point blank, just like that, without severe physical health consequences, whereas I don’t think anyone has ever died from going cold turkey off gambling. With drugs and alcohol, detoxing is a long, painful process. Even if you wholeheartedly want to quit, you can’t just do it easily. With gambling, it’s as simple as willpower. I know it isn’t true, but on some level it feels like anyone who can’t quit gambling simply doesn’t have the will to do it.
That said, addiction in any form is terrible, I respect he has a problem, and I do genuinely hope he gets help and gets his life together. But given certain things he has done in his past, I’m finding it hard to dredge up sympathy for him.