He played Navas as almost a right back, risked exposing Sane (a right winger) at left back, and against Everton he sent Vinnie on as a striker
No he didn't, he played them either as wingbacks, or actually, he played them as wingers and just demanded they put in a defensive shift. I suppose if you completely invent things he's done, you can find a way to criticise him more easily.
Last year Pep played the exact same 3241 system with Robben and Ribery as wingers - absolutely nobody called them wingbacks let alone fullbacks. I don't know why everybody on here is trying to call them wingbacks but I suspect it's got a lot to do with the media's insistence on using the term to use anyone who plays wide in a team with 3 at the back.
Here is the average position of the team on Saturday :
How many Right backs have you ever seen who spend most of the game almost as far forward as the striker? None. They weren't playing as fullbacks, that's just not true.
His tactics had us be the better team for most of the game, and create 4 or 5 incredibly good goalscoring chances, which if anyone had shooting boots on, would have left us dominating the scoreline and Pep hailed as a genius.
Not to mention Sané was off the pitch when things turned to shit - the only goal we conceded with him on the pitch was a route 1 long ball that Otamendi managed to fuck up - hardly the managers fault, it's the definition of an individual mistake.
And criticising him for throwing on a defender for a chance of a last minute goal? Every manager has done that, it's not new and it's definitely not crazy.