He's been the best of the bad bunch, that's why he was given chance after chance. He looks timid sometimes but also shows moments of brilliance such as his goals against Milan, Lazio and Porto. His defensive workrate, just like his offensive one is inconsistent but at least he never put us in a bad spot like Bentancur and Arthur did (the sending off vs. Roma was super harsh imo).
I understand people here hate him because he earns more than he deserves, but there is a reason he's called up to a French national team that is full of good midfielders and World Cup winners.