If you see a fellow competitor or friend achieve results with someone, it's likely you'd consider also working with that same trainer if yours have previously not been to your satisfaction. I recall some negativity about his approach from some at one stage but overall the good experiences/placings seem to outweigh that.
I swear just about every jacked girl tags him in their posts/progress pics! Amandine Kolly, Paula Ranta, Ava Melilo, just a few off the top of my head. Is he the industry's best coach? Does he have special knowledge on steroids and cycling? What makes him so popular with the FBBs?