I agree you don't need harsh binary rules, but once you give yourself the freedom of drinking when you want to, ask yourself why you are choosing to. Many of her points are directed at the reasons not being so good.
I would argue this argument goes for many things. Its an uncomfortable conversation. Many people exercise because they hate themselves. Many people avoid soda because they feel they need to be punished. Some people are self-destructive just because they think it's what they deserve.
Point being, in the grand scheme of things, its sometimes okay to do things for not so good reasons. And you won't save yourself with restriction necessarily. Part of the human condition is it feels good to feel bad. Some people take this way too far, and they won't even know they do it. They'll quit drinking not to be present, but to deprive themselves of that ounce of happiness.