Thing is, you cant just discount the whole penalty thing just because he usually isnt good at them. And yes, because it is de gea you can absolutely expect him to pull moments of quality out of his ass. That's how he got his reputation. If he didnt do that, he'd be nothing more then a standard every day goalkeeper. But it's not even that, he didnt save anything all tournament. Morocco had a shot go right through him even if it was a 1v1, Russia had a couple of pens go right through him, 1 or 2 others that were salable just like how Akinfeev saved today, while also the first Ronaldo free kick was a great shot but De Gea again didnt even jump for it. It's the combination of everything. Obviously nobody expects a goalkeeper to save a pen. But from 6, I would expect something. From the 4 games in this tournament, he will be disappointed in his own performance in every game. Even the Iran game, their offside goal went right through him. That's the sort of thing he saves for United. Same with the first Morocco goal. We can make excuses for him as we'll always do for our own players, but for his own high standards, you can bet he'll know he underperformed.
Me personally... idk if I can call him the best goalkeeper in the world anymore. I've said he was for the past 4 years, but after underperforming at the euros first and now how he did at the WC, hes just "one of the best", rather then the best imo.