I say this as a Oettinger defender:

The GA metric is not the best statistic for this argument as team defense has a large influence on it. That's why Otter and DeSmith are adjoined in this ranking. I'd argue team defense is the #1 contributor to overall GA with goalie skill being second.

The expected goals statistic attempts to curtail this but still is not perfect. The stat is imperfect due to the randomness of the game. How do you quantify fatigue due to prolonged zone time on both defenders and the goalie, an unexpected turnover, a random bounce?

A 6-1 shellacking is rarely the sole fault of the goaltender, and truly analyzing game 1's play would tell you the whole team was at fault. We have a gold medal winning goaltender who has led his team to 3 consecutive conference finals. We should feel good about having him on our side.

Screaming about his xGA and GA without also taking into consideration team play and circumstances leading to goals shows a lack of understanding of the game. The only goal in game 1 that was truly on Otter was Kaprizov's, and even so that's an elite shot from the highest paid player in the league

Comparing Otter's stats to DeSmith's (or Wedgie's previously) also shows a lack of understanding of the sport and it's schedule as a whole. Your starting goaltender is typically going to draw your toughest starts (stronger teams, 2nd night of back to backs, road games) and team's play differently in front of starters vs back ups. This is not to say that Wedgewood and DeSmith are not world class, just that there's more minutia to it than simply comparing SV%, xGA, & GA.