"These stats I don't understand are stupid I tell you!"
Who said anything about not understanding them?
Hockey as a sport is not quantifiable by stats like Baseball is. I understand all of those stats, just a lot of more of Hockey is up in air and "puck luck" is a considerably larger thing. In Baseball each play happens 1 after the other whereas in hockey mistakes can happen simultaneously and compound in a way that Statistics cannot realistically model. Even then, nothing is concrete like in baseball.
In Baseball its binary; either you base or you don't. 1 or 2. So while base % is kind of an obscure stat, nothing is arbitrary, there is no judgement call. But with Corsi, how far does a shot have to be for it to be a shot? Who counts the shots in every game? Is it the same person or is it the very much varied guys that each team employs? Is it a shot if someone goes to shoot but its gets stick checked before it leaves the blade? Is this ruling consistent? Are these stat totals audited? If I shoot, and it is redirected by another player how many shots is that? What if the opponent redirects first?
Even disregarding the huge holes in the stats, the rather large inaccuracies introduced via the opinionated nature of the stat, unlike every other proven statistical model that anyone of note follows, it cannot be used in a predictive manner. Somehow, the leafs still win despite having the lowest Corsi numbers in the league; New Jersey has the second best Corsi numbers in the league, and are completely out of a playoff position.
Not to mention, there is not a single player who has a predictable Corsi-curve over a span of 5 years. No one has identical Corsi from year to year despite having nearly Identical Box-car numbers over a long period of time. Corsi cannot even predict CORSI.
Sure its an advanced stat, but as far as I am concerned, it is a "stupid" advanced stat. It does not under any circumstance give you a realistic view of what a player gives you.