Advanced stats and hockey analytics are a part of the game. These metrics allow us to quantify and discuss what we are seeing on the ice, not contradicting it. The data and spreadsheets are driven by the on-ice results. It's treated "as religion" because it's the truth without bias. Expected goals drive actual goals. It's the best indicator of success that we have. Sure, everyone would rather have an actual goal on the board, which is why you "do the little things" that result in more chances, more possession and a better opportunity at winning. Generating chances and trusting the process will yield the results.
PDO will always be part of the game but apart from sticking a horseshoe up your ass, you can't control luck. Last night was an example of an even game where it could have gone either way. The goal is tilt the ice in your favor and create data driven results, instead of praying to the PDO gods.
I'd love to hear the alternative and argument for ignoring what the data is telling you? Is your plan to yell at your forwards to shoot the puck better?
Also just saw this: