Not sure exactly what your point is. The risky behavior being referred to in the article is partly going faster than one should. You're basically making the same point, in order to go faster you feel you must wear a helmet, which if you flip around, you don't go as fast when not wearing a helmet. Not going as fast is less risky behavior.

Now you can decide you want to bike faster, and by all means (and I would make this choice as well), when riding aggressively in any context, you should wear a helmet.