Whilst I don't disagree with what you're saying about the standards of keeping, I do think Boro mishandled Alves.
He is the type of striker who thrived on killer through balls and clever around the corner passes and we bounced out the one player at that time we had in our squad capable of doing that in Rochemback. Consequently the lads supply line was effectively cut and if he wasn't scoring Alves offered little else to the team. With one or two different type of players around him I think he'd have done a lot better here but we'll never know.