I mean, until Barca actually pay him the money they owe him, nobody knows just how set he is on staying there. Obviously they are his preferred club, but whether it's "I want to stay here no matter what" like people make out or whether it's just like a normal player who has a preferred club but will still do what's best for their career, who knows?
How many players in the world would have left and allowed Barca to effectively steal 10's of millions of euros from them? That's what Barca tried to force him to do, and what the people who criticise him for staying there seem to expect him to do. Indeed, the fact FDJ refused to let Barca bully him into giving up those lost wages and made himself a source of anger within the club and the fanbase leads me to think he might not be as in love with the club as much as people make out.