Again, not disagreeing as such, but I think you have to allow for your goalkeeper to go through better/worse patches in the season.
When De Zerbi and Potter switched goalkeepers mid-season, it was because they felt there was a clearly better alternative available (in De Zerbi's case...
Passes where he trips over his feet and accidentally nails the ball into the top corner of his own goal.
It's remarkable that more isn't made of how often he does that.