What I always notice is that he never actually says that the reason he's somehow "not" an addict anymore has anything to do with Passages. It seems very carefully worded to imply that there's some kind of connection, even while he never outright says so. Just that he happens to have been some kind of addict, and that Passages happens to be some kind of a rehab facility, two separate facts that for some unknown reason we're supposed to think of as being related..! What an endorsement..