Exactly. If someone is diagnosed with diabetes, and then makes no effort to regulate their insulin levels with food and injections (or whatever they’re prescribed to do), that person is going to eventually die from complications of diabetes. Probably sooner than later. It’s not that person’s fault they are diabetic (even if their lifestyle contributed, first they had to be genetically predisposed). But because they didn’t take responsibility for their illness and take steps to treat it, they are now responsible for the consequences.
It’s similar with addiction in that there is a predisposition, contributing environmental factors, and then treatment that lasts the rest of the addicts life. If they don’t treat the condition, then eventually it will probably kill them. Not their fault they’re an addict, a consequence of refusing to take responsibility that they suffered the fate they suffered at the time they did.