No he doesnt have to bag it, but we shouldnt be bagging him either...
He is in a position of authority. He is a professional and the fact that he posted this information on a website means that he has put it in the public domain and therefore should be very open to such criticism.

I'm am also very appalled at his lack of regard for evidence based practice. Informed choice people, not opinions is all I can say. What a shame.....