How exactly do you think coaches reach the NHL? It doesn't necessarily mean you will be good at the next step up, but it does mean that the chance was justified and based on merit, which was the topic of discussion. For the record, you haven't brought a single reason why it would be unjustified.
Many are assistant coaches in the NHL before they make the head Coaching gig, there is a reason why NHL coaches are recycled, inexperienced coaches are huge risk, for all the reasons I outlined before, they use CHL coaching skills when NHL coaching skills are required, relying on old CHL coaching tricks like line stacking wont work in the NHL. Based on the replies in this thread, you are so far, the only poster that can't see this. Perhaps it is due to your inexperience in hockey?
No, though I have heard of the Peter principle, and it doesn't really apply here, because unlike many promotional pathways that the peter principle may apply to, this is not a different job requiring an entirely different skillset - it is a very similar job, just at a higher level of competition.
Awesome the spelling police have arrived, good for you, you can pick up a typo. So not to talk down to you, if you are suggesting that you don't need a different set of skills in the NHL vs the OHL, that probably explains why you believe the illogical fallacy if you are a good OHL coach you will be a good NHL coach, this belief probably stems from your inexperience with the game. Just seems to me to be a pretty easy and logical conclusion that you cant coach the same way in the NHL that a coach would in the OHL but if you want to argue that point fill your boots always glad to help a newbie to better understand the sport. To that point why are Junior coaches never selected to coach international Men's tournaments? If you don't need a different set of coaching skills between the OHL and the NHL why don't you ever see a CHL coach, the Head coach of Canada's Olympic team?