You could say the same about a cure for lung cancer. I'm sure some people would take up smoking/smoke more because the consequences would be less. But that wouldn't mean a lung cancer cure was bad.
I can see what you mean, but it's not quite the same thing. You don't exactly choose to get lung cancer- you get it, or you don't- smoker or non smoker. I was thinking more along the lines of removal of consequence from a choice (drug use)a person makes in my previous post. But, very true, it doesn't mean that the cure is a bad thing.