What I found contradictory was the statement that all NHL coaches can be dismissed as idiots, yet shots for/against and similar stats need to be given weight because they were invented and implemented by coaches.
That's just the tip of the iceberg. Half the **** is contradictory, it's all applied selectively to whatever they're tying to prove, and it relies heavily on the assumption that the statistics are highly meaningful. In truth, the difference between a good player and a bad player, according to these statistics, is very small. So small that you have to wonder if the significance of the statistics is being exaggerated.
The answer to that is yes, by the way.
Even when it is used properly, like with teams, do you know what some of the biggest supporting evidence is? That Cup winners fall into the top 10 of Corsi. The top 10, in a league of 30 team. So it encompasses an entire 1/3 of the league. And that doesn't even apply every time. Hell, there are playoffs where, if you bet on the higher Corsi team, you'd have lost more often than you won. And keep in mind, these are the team numbers, which balance out more. Individual Corsi use is much more unpredictable, and relies on far more variables that are unaccounted for accurately. I like statistics, because they can give you more information, but those are not the kind of numbers that lead me to believe shot differential is some fantastic statistic. All this shot suppression, and shot differential stuff is not nearly as significant as they are trying to lead people to believe.