In my opinion, freedom has a lot to do with self-control. So it is true that an addict is likely to have less freedom than someone who does not, but at the same time, he has some power over himself that he is not using and therefore, he is choosing to remain that way, and therefore he is also responsible for their own addiction. He can begin to make better decisions to help him break out of his addiction and regain his freedom. For me, the main determining factor between having more or less freedom is making the decision to do so.
All people can achieve liberation if they set their mind to it.