They paid a shedload, yes, and now West Ham are bidding £4/5m for him. Yes, he scored a few goals, and then people were mentioning him as an outside possibility of making the England squad - people overreact. Left winger? Left winger?! Do you really have that a naive understanding of current formation trends? At any rate, Long is certainly better suited to this 'left wing' role you speak.
Edit: Reference 'left wing', I'm not of the opinion that you are naive, I just think you're choosing to be difficult