And id definitely say he's struggled more than others in those key moments. Looking at individual play you have plays like the MTL turnover in Game 7, the tears and delay PIM in game 6, the botched defensive coverage closing the boards on Point in game 6 v. TB1, then the missed angle on Pasta's game 7 goal this year.
I haven't seen him struggle more than others in key moments. He's not perfect, he has bad games, and he makes mistakes like anybody else, but these moments only stand out because a select few have spent 8 years microanalyzing Marner and building a collection that they repost in every thread to misrepresent what happened and who is to blame.
Puck over glass penalties suck, but they happen. It's only notable because it happened after a bench penalty (which can only happen to Marner since he's the only one of the core 4 trusted on the PK) and they scored. But Keefe made the bad call for the other penalty. The PKers and goalie allowed the goal. And if we're so worried about penalties, why are we going after our best net penalty player through this era and not the 46 players that averaged more penalties taken?
Some of these things aren't even Marner's fault, and we need Hall of Famers to teach people hockey. "“The game-winning goal, Pastrnak's goal, they're blaming him and it's like, if anybody knows anything about hockey, they were in a neutral zone regroup. So F1 changed and he jumped over for F1, Pastrnak's not his responsibility at all,” Oates argued."
Sometimes he does make mistakes, or a play isn't executed perfectly for whatever reason, and it directly or indirectly contributes to a goal, but that happens all the time, and if somebody is contributing 15% to a goal against, they shouldn't get 100% of the blame. If we're so worried about defensive miscues, why are we going after one of our best defensive players who rarely gets goals scored against them, instead of the many worse defensive players who bleed goals against?
Because it's not actually about any of that stuff. It's just about finding any way to blame Marner. And it blocks any actual productive discussion about Marner; ways he could improve, and ways we could better utilize him.
If this is just bad luck, which seems to be what you're alluding to when does it turn around? Because he wasn't good this playoffs. He wasn't good vs. FLA. He wasn't good vs. MTL or CBJ.
I mean, that's not true. Some people just like to equate production levels and play quality. As for the weird plummeting IPP in that specific sample, I don't know whether it is random variance in a tiny sample of low scoring series or there's an underlying reason it distributed like that, but the reason is not what many here are pretending, or something worth throwing away a top tier player over, especially when he produces so strongly in the other games and his underlying play remains strong.