It's always like this. These bums always fool fans and coaches in early season, in Camp Nou games, when the team is under no pressure (mentally and from high pressing teams). Coutinho, Rakitic, Dembele, etc. etc. look great and people think "maybe this team has a chance", "maybe these players are worth it".
And then come spring, in the make or break game where it counts, they fail. They'll have runs of 5-10+ great games against minnows, but fail when it counts.
And then we continue to go backwards year after year and trust them, with the memory of a goldfish.