That’s a bit harsh. All clubs need a squad of players; and a good number of them will not feature in the first eleven all that often. They all have to be of a required standard, which does not mean that all of them must be up to the performance of those they are substituting for; otherwise the club would need to pay them much higher wages.
Raff, wasn’t signed because he was good a kicking a tennis ball around a school playground; he was a product of Liverpool’s Academy - and if I remember it correctly, captain of their under 18 team. What we saw of him was decent enough. His best performances were when he came into the team and was given a run at left back, and supporters were certainly not getting at him then.
But time moves on, and now speedy wing-backs are what many managers wish for, so Raff is surplus to requirements; we can see that.
He played a reasonable number of first team games when called upon. His reputation, from the training ground, was that of a hard worker who did his best, and he was rewarded for his efforts, occasionally, by being called up to the first team squad. We should let him go with dignity.