Lmfao. Nobody claims they are some sort of oracle that predicts with 100% accuracy. Now you're just being petty.
Well, no, but you're essentially saying the current W-L record is irrelevant and this team (and coach) should not be judged by it at game 27 because they'll improve over the remaining 55 games of the season (and you're basing that prediction on their underlying metrics through the first 27 games).
Which is fine. But, it's just as fair for someone else to judge this team (and coach) at game 27 by their current W-L record.
In general, though, I think people focus way too much on advanced analytics in hockey. Analytics are much more tailored to baseball, where you have hundreds of identical episodic events every single game (with a defined start and stop + limited variables), and tens of thousands over the course of the season.
In hockey, you can have a 5 game stretch where you get 50 scoring "chances" for and give up 45, and people will extrapolate these huge conclusions because "53% CF%!!!!". Even better if they put it into a nice colourful graphic.
I mean, Ottawa is top 10 in high quality chances for, Vancouver is bottom 10. Ottawa has generated 59 and Vancover 50. A difference of 9 chances over 27 games, and one team is an underlying numbers darling that's way better than their W-L record and the other is not.