I think he is worth persisting with. We certainly have more pressing issues to address (i.e. midfield). I feel a lot of highly regarded keepers make mistakes.. just when they do, it has more visibility due to the position. De Gea comes to mind for howlers. And Kepa this year was awful for Chelsea. We could do a lot worse.
Is that the barometer now?
It's arguably the most important part of the pitch, he's lost us so many points this season.