And my whole point is that his three small errors are nothing and that going after Rielly for this goal is total nonsense.
There are two seconds of real time between your first screenshot and the last one where the puck is in the net, 8:24 to 8:26 on the clock. It's already 8:25 on the clock in the 2nd image.
Perry has agency in this play, he's using his body to shield the puck. You can see in images 2-5 that Perry does a full body rotation to shield Rielly off as he swipes at the puck. With one step of acceleration, you're expecting Morgan Rielly to knock Corey Perry off his skates in front of the net? Even while taking a cross checking penalty, Jake Muzzin couldn't knock Perry down before he stuffed that in. Corey Perry won a freaking Hart Trophy collecting the garbage like this, he knows how to brace himself, and you want Morgan Rielly to come from a dead standstill to knock him on his face in 1 second? Sorry, but those expectations are completely detached from reality.
The errors that I describe in the play and that you're arguing with me about are essentially irrelevant to the fact that the play actually ended up in the back of the net. Brodie doesn't move his feet at all in any of the images you posted, and is the one who let Perry get inside like that in the first place. Campbell let out the rebound, wasn't fast enough to get the puck, and then wasn't strong enough on the rebound to smother it. Hockey players make mistakes, it happens to the best of them, and Corey Perry has banged in the trash his entire career. Watching a James Van Riemsdyk goals video on youtube will turn up dozens of clips of similar plays getting banged past Norris trophy winners.
I'm not trying to sell Rielly as good defensively, I'm more than willing to be honest about the strengths and weaknesses of our players. Rielly is the weakest of our top4 defensively. But I will absolutely stand up and defend him from obvious agenda posting and getting blamed for things that aren't his fault. If your argument is essentially, "Rielly isn't a Norris calibre defenseman" I mean sure. I'm not really in the camp that he is one. But I absolutely 100% believe that the expectations people have of what Norris calibre defense looks like is completely different than what it really does. If anything, I think that going after Rielly for imperceptible mistakes to make your point weakens the argument because it's obvious you're holding him under a microscope that you don't have out for other players.