Well, nobody told the dog, or most dogs, that biting isn't allowed. Dogs do bite, like it or not. Do I feel for the reporter? Of course, but her life isn't at risk, plastic surgery aside, she should be fine and fully recover. Poor dog, because there are people who feel like you do that dogs should never, ever bite, and some of them make laws that kill a lot of dogs. Maybe not that one, but others, and if his breed is banned, then it's just not a good thing at all.
The dog I had who had by far the BEST temperment of any dog I've met or run into, with people, with other dogs, you name it.... she did snap at a kid once. Sounds horrible, but I wasn't there, my SIL was with my nephew, who was teething, and likely she wasn't watching what was going on and just reacted when my dog suddenly snapped and barked at the nine month old. When I got home and checked on things, there was not a mark on the kid, he was fine, however there were multiple bites on the poor dog's ears, two perfect imprints of baby teeth (human) on several spots, through the skin. It never happened again, she was a great dog for another 12 years, having toddlers fall on her in her last years, getting smacked by strangers in public (she was eating cookies out of my son's tray, he thought it was quite amusing, I'd give him the cookie, he'd put it on the stroller tray, she'd politely take it.... this insane woman came up and smacked her muzzle but then got told off by me).
Nobody is really to blame, the owner likely has no clue of what kind of dog he really has (or he'd know they're not always the most social), the reporter doesn't know much about dogs or wouldn't put her face so close, and the dog should know that people don't understand dog that well (most of them anyway).