Mixed feelings here.
While the outcome here was good, it could have ended badly. What if Gene had to shoot? If he killed a man over a family fight?
Don’t CCW classes teach you only to draw if your life is threatened? (Or your loved ones?)
While it might be tough (or cowardly even) to walk away while an old man is beat, that might have been the best alternative.
The CCW class I attended talked alot about the “white knight syndrome”. In short you feel bolder and may become involved when you normally wouldn’t if you are carrying. You are also more liable to act on first impressions when facts later would change your response.