I'm not sure what the whole story is here, but I for my part have NEVER liked hazing treatments in gyms.... BJJ is meant as a self defense martial art, and if you gotta pull shit like that, you're the bully that deserves to be stomped. We've had mat bullies in my gym the 14 years I've been there, but whenever we'd see that guy (usually the big roided out asshole who went mach 10 against the teens coming into the adult class, the new guys who were 50 lbs lighter than them, or the ladies)... We'd step up and ragdoll them (then they'd sit out a few rounds because they're exhausted). That bullying shit is disgusting.
On the other side of the matter, I've seen where it's a guy from a rival academy, coming in to spy on the gym who gets that treatment.... Or that guy who says he's either never trained, or has only trained for a few months (a couple of years back) and starts pulling out high level shit.... Those guys get that treatment..... But what happened to the guy in the video doesn't seem like that was the case.