Didn't Joaquin Phoenix spend a year pretending he was going off the rails as a long term performance art project? Maybe this is more of the same?
I doubt it. Phoenix only spent a year acting crazy and many people weren't fooled and suspected it was for a project. Shia LaBoeuf has been acting like a jerk for many years. I remember I refused to see the last Indiana Jones movie just because he was in it and that movie came out in 2008 (6 years ago).