This is spin, and an extremely important point which pretty much squashes the argument. In Hollywood, if you don't campaign for an Oscar, you ain't getting one. Look at Michael Moore--no one can tell me he is not loved by Hollywood, yet he deliberately avoided the Best Doc category (and put the movie on TV before the allowed date) to get Best Pic. He failed because of the politics of wanting to give those noms to movies with directors and producers who could give the Academy members work (and hwo are the voters friends).
I didn't know Gibson didn't campaign; this puts a whole other reality on the table. Not campaigning is a snub of the process, and is flipping them the bird. No wonder they didn't nominate the movie.
Nonsense.