Different advice for different circumstances. Do you get upset when elite athletes talk about the importance of avoiding overtraining, when they have already become elite?
Apples and oranges my friend. Being elite and overtraining are orthogonal. By definition, overtraining is pushing your body too far too fast. No one can train for a 100 mile race by doing 3 50 mile training runs in a week. That's not how physiology works. Discipline and lots of hard work can help you be elite, but overtraining is never good. Never.
