Man this Argentina team is horrible. There is no cohesion and no discernible identity or system. Very difficult for one player to affect a team like this. Sampaoli appears to have no clear plan on how to use Messi.
Sure, Messi doesn't look to be in great form either, but the main problem with Argentina is not him. Roughly half of the starting eleven are painfully mediocre players, highlighted by Willy Caballero who has done two horrific mistakes at both of the first goals conceded in these two matches. In 2014 they at least had some cohesion and a system to fall back on when things got chaotic, as well as a better keeper.