I found this on a blog site. It's written by a Catholic named Elinor Dashwood. It makes a lot of sense when she says: "He's famous! He's gorgeous! He's rich! What these star-struck types don't so commonly acknowledge is that He's a schismatic! One serious Catholic after another has succumbed to shivery gratification because Somebody Totally Cool is willing to admit to being a Catholic. "
But actually Gibson is not a Catholic he's part of a schismatic sect.
I think that's the crux of it (if you'll pardon the expression) right there!