It'd be really great if people had perfect control over their own emotions and intentions, but sometimes we don't. That's precisely why people fall into irrational misdeeds like the article was talking about. Their behavior, on the stoic view, is determined just as much as ours is.

I'd say its a nice (and perhaps impossible) goal to aim for, but to say that "Fear, Anger And Other Emotions Are Personal Choices, Regardless Of Outer Circumstances" seems like an incorrect overstatement to me. I could be wrong though