Any artist, regardless of his field, can experience distance between his true self and his public persona. But because film actors typically experience fame in greater measure, our personas can feel at the mercy of forces far beyond our control. Our rebellion against the hand that feeds us can instigate a frenzy of commentary that sets in motion a feedback loop: acting out, followed by negative publicity, followed by acting out in response to that publicity, followed by more publicity, and so on.
Participating in this call and response is a kind of critique, a way to show up the media by allowing their oversize responses to essentially trivial actions to reveal the emptiness of their raison d'être. Believe me, this game of peek-a-boo can be very addictive.