I'm rejecting it on the grounds that it is anecdotal evidence wrapped in personal and popular belief.

Your anecdotes, and the anecdotes of the others here posting about people they know who are angry all the time, are not evidence of any condition, except a very human one: someone is isn't very happy with their life.

People who are angry all the time aren't addicts. They aren't in need of medical treatment the way addicts are, because emotions, even strong ones, don't cause chemical and cellular changes to the brain.