Since this actor has a history of problems with substance abuse, it’s easy for people to take any behavior and twist it into a warning sign that something is amiss with him.
While he is stressed, he is actually sober right now.
That thing he does where he talks to himself is him rehearsing his lines.
He’s done it for years.
Sometimes he’ll just recite his own lines.
Sometimes he will do both parts of a conversation between two people, including the blocking and the hand gestures.
So although he looks crazy, he’s actually just working. We’ll tell you what to look for if you are concerned about his sobriety.
Look at his body.
When he is using, he tends to get very, very thin.
That’s what happened when he was struggling while starring on that famous TV show.