So why B.Willis is acting like a douchebag lately ? simple...
He's PISSED that he has never grabbed an Oscar and at this point in his life he feels like he's only getting the kind of roles that he had outgrown a long time ago, the whole "i'm too mature for this immature *beep* !"
for him it must feel like being forced to dress and act like a clown for children for the rest of his life and pretend to like it for the rest his life (even if he gets paid money for it) with nothing beyond that
and it's been getting worse now that he's obviously not a young man anymore.