Well, not literally. I mean, these are just cosplayers. Hangin' out, takin' photos. They're not really up to extreme acts of deicide.
But if they wanted to pick thar up, maybe they could, because they're so good at the whole cosplay thing that I'm sure they could do anything they put their minds to.
What stands out to me here isn't just the fact it's Mononoke cosplay, but that there are multiple characters, and even an anthropomorphic Yakkul, which is a nice touch (a "furry" version would have looked weird in an otherwise "realistic" setting).