Hand waving away analytics because you don't like what they say isn't a legitimate argument.
Again, we actually have some stats that can evaluate these things. These stats say Jarry has been far away the worst starting goalie in all of hockey this year. If you're only stopping 6.5 out of 10 high danger shots against, when the league average is 8.1 of 10 high danger shots against, you're doing a terrible job. This isn't even a technical critique of Jarry, which you can certainly make (he's playing small as hell right now and his rebound control has been awful), this is just a statistical one.
The defense of Jarry in here sounds like people blaming the fielders for a pitcher having an ERA of 5.75 on the year, when his FIP (fielding independent pitching) is like 5.5. Sure, maybe the defense is making his numbers a little bit worse, but he's the primary driver for being bad.
It's not hand waving them away when put to it's actual use of being married to the eye test and at times they will not come to an equal conclusion.
I will say letting up 10 high danger chances per game is absurd. For any team. Especially when a lot are at your doorstep. It's poor defensive style/systematically, insane, to expect a goaltender to deal with such poor play constantly. Eventually you end up with like "battlefield shellshock" It's why each and every goaltender that has gone through here looks like a mess. That's not to say they don't eventually end up with issues themselves considering that, a lot of goalies have gone through this at some point. This team is not currently built upon a defensive first system. Maybe they should put more effort to defense than offense and work from there.
Baseball is a terrible analogy comparison. The Pitcher is not the last line of defense. He is the first. He would be liken to the center who takes the faceoff. The control of initial play.
Nobody is absolving him of bad play, but all bad play isn't exactly all on his shoulders to bare. Last night, the only goal he should of had was the PPG against, and he did at first. But blame should also be put on TB for creating the PK, and a poor diamond defense that created the good opportunity with no real depression of the one-time shot going from side to side where he was completely being blocked from net front presence to sliding across in a fast manner. Not locking up the man in front is more reason why the goal was scored. Players didn't play to the whistle and assumed he's got it. He doesn't have eyes in the back of his head, though, you'd assume he would close up and possibly stop that puck from leaking out.
The rest is completely on the players in front of him.
Goal #1 is on Ceci too far out of position. Great backhand shot
Goal #2 is on Crosby and his over pursuit. D-man blocking view of the shot
Goal #3 is on Letang for waiting too long to decide on what to do and leaving a man free in front.
Goal#4 is on TB for the OTG PK and a poor system setup. "Diamond defense" No net front coverage. 2 guys left uncontested.
That's just on the goals scored. Count up the amount of more that did get saved. It's really not just the amount of high danger shots but where they are taken. High danger shots can come from out a little further. He's seeing them from the hashmarks in, constantly, with little to no help.
So... the list looks like this.
Coaching.
System.
Players. Forward and defense.
Opposing players who's high danger success rate could be even higher if it were not for their own failure to convert easy chances and flubbed them.
Goaltending.
In that order.
You take care of those and goaltending will not be an issue. If you consider working from the goal out then you will not get very far considering the issue don't start there.