I think people forget just how good he was back in Lambert's first two seasons. That's understandable, it is pretty hard to see through the steam rising of the B6 turds at the moment.
However, he won our player of the year in a season when Benteke scored 19 league goals and was fully deserving of it. He barely made a mistake all season, came for way more crosses than any other keeper in the league and made some great saves in the run in. He was also great the following season. He has massively declined in the last 12-15 months and chuff knows why that is. But it's a shame to see him struggling and receiving so much bile.
By all accounts he had always been a good character to have around the dressing room so I guess it's the chewing gum incident that has clouded most views of his personality. Coupled with boiling frustrations at some admittedly terrible errors.