He’s still a defender, not a wing back or a winger which is what he’s being asked to do because he’s the best option we’ve currently got, unfortunately.

Don’t disagree with the second part of your post, still think it’s unfair to call him awful given that.
He’s chipped in with a load of good assists over the years, which given he’s a defender (not a modern, marauding wing back) is good going. He reminds me of Brana in that respect, he gets stick for not being amazing at an element of his game that he shouldn’t really have to be anyway. Defending is almost barely a requirement for Full backs nowadays, it seems (Moses being a prime example of someone who did a decent job as a wing back despite not being able to defend)