My wife would disagree with you. Probably angrily. While what you said MIGHT be true for someone who can ski bumps well, I disagree completely for someone who stinks, or has never ventured in. They have all sorts of problems like line selection, tactics, etc. Those shortcomings will almost guarantee that they will be at real risk of several out of control moments that place their knees at risk of pain. To the recently surgurized, pain equals injury. That's what they are afraid of. That's why they are apprehensive.
That is exactly what he said?