He isnt saying the clutch had anything to do with what happened to your motor. He is saying that with the clutch being the way it is that the car and motor have been driven hard. He is also saying that if you miss shift and go to 2nd when you meant to go to 4th it could cause what happened. Maybe you should go back and reread what he has to say before you jump down his throat when he is trying to help you out.