Except many goalies do stop chance like that. They actually stop chances like that more than half the time even.
I wouldn't complain about goals 1 or 5, if it wasn't also for goals 3 and 4, coupled with literally zero saves on what some may call a five alarm scoring chance. No goalie that you'd expect to lead a team on a playoff run should have allowed all 4 of those goals. 2 at most would be reasonable, and the team would have won if he limited those 4 to only 2.
Well I agree with the final statement. My point is you are criticizing the wrong goals when you focus in on OT SPCT and OT GAA. I mean it's the tyranny of small numbers. Any goalie who gets scored on in OT has no chance on that night to pad stats with additional time on ice or additional saves made after the key event (goal against) has happened. ... so any goalie on a team that doesn't show up to play in OT is going to have terrible stats maybe entirely independent of their own play.
I'm good with criticizing goalies, just criticize them for the level of errors on a given play that you would criticize other players for. There were no major errors on either Kempe goals, or on Kopitar's, whereas we all saw the errors committed on those plays by Skinner's teammates.
And... to your point: you are actually more peeved by the Fiala goal or (to a lessor extent) the Doughty goal. And I agree, he messed up big on Fiala and overplayed Doughty... stop those and there is no OT.
PS: Why isn't anyone talking about Ceci? He messed up on the "easy" tap in, putting it wide of a gaping net and where the heck was he while Nurse and Skinner were hung out to dry on Kopitar's OT goal? Those two mistakes also directly caused a two-goal swing and he was the biggest offender on both of those plays.
TLDR: It's a team and there were mistakes all over the ice.
Everybody needs to bear down.