Nah. It’s nothing to do with cameras or no cameras. This guy is a murdering ass. He doesn’t care a wit about decorum
He's playing for posterity on social media. He's also building his cred for his soon-to-be total prison immersion experience. He thinks that getting in whitey's face will bring him some respect in the joint. I'm no expert on that, but from what I've seen in true crime videos, it will make no difference.