This is a ridiculous excuse. Pope? Meslier?
Someone has studied Sports science.
The one thing the science can't comprehend is aggression and bravery. It's a mental thing more than anything.
He will never be the most commanding goalkeeper, that's a given. Your right he isn't built for it. But he should still be at least reasonable at it and he isn't. It's not his body type that makes him the least commanding GK in the league it's his lack of Bravery and aggression.
Yes of course there's also the mental part.
I agree that he's massively afraid of getting hurt.
But then what comes first, is it just a pure mental thing or is he afraid because he is weaker?
You could write an essay about him, with physical and mental attributes, broken hearts and childhood trauma to look for the root of the weakness. But in the end we just care about having a commanding goalkeeper and he has no time left to show he can improve.
Now with all the delayed takeover thing and the lack of a 9 that will take probably like 2/3 of our budget we probably will have to extend DDG so he will have to improve in that area.
So apart from upping his mental tolerance to pain the only other way he can overcome being weaker than your average footballer Joe is improving his technique, something he haven't done in 10 years...