Am a bit clumsy, where did you get it? Can't find it.
That is true. But an intelligent player can't be (or at least shouldn't) that rigid with formations. When the midfield is weak you need to help it, you need to track back and help both the midfield and the defense. Left Roberto 1 on 2 too many times last night.
Messi does it, not giving a fuck about formation. Not saying that's the way to go, but you can't exclude yourself from the match if the team needs help, if things need fixing...
Can't say was it a dumb or a lazy game from him.
It's not only about the names. Roberto was more involved than him. He simply kept himself out of it as persisted staying too high up the pitch.
Look at Coutinho's positioning. You might say he was a passing option, but not an easy nor a safe one (quite evident considering his stats), but to say that you'd need to have a proper CM in place of Paulinho.
He simply didn't try hard enough. Didn't want the ball. That's it.