IMHO people are blinded by Messi's decisive genius and whenever he just plays an average game, they start criticizing him much more than it is necessary.
Messi did NOT have a bad game against PSG, he made up 1 1/2 goals but whenever he is not an "alien" people start this BS.
His shots, free-kicks sometimes avoid going in, his dribbles are sometimes unsuccessful, his clever balls are intercepted, that's the nature of this game, but a good team is a good team if at certain games others take his shiny role, just as Neymar did recently.
Neither at the PSG game nor today Messi wasn't worse than many other team members. He was decisive enough at many games this season to merit the "right" not to be his best each and every game...