He said having more of the blade's surface on the ice allows him to glide more freely. And Smith points out that if you watch Modano when he takes a lateral hit, his blade will give a little and glide sideways, preventing stress on his knee. Some of the nit-picking attitude about millimeters seems petty, but it can make a difference. A lot of the stuff I do, I don't even think about it, I just do it. But that's the good thing about a routine, it's there for a reason - because that's what you feel comfortable with.
Helmets likewise are a matter of personal preference.
Verbeek wears one of the thickest padded helmets available, straps his chin strap tight and wears a visor to protect his face and eyes.