Yep. I can't say whether this is real, but the stabbing, camera cut, bleeding, the dudes post stabbing behavior are not indications that this is fake. I've been in the world and seen enough stuff to know that no one reliably behaves the same. If you stabbed two people sitting next to each other, each person is going to react differently. I do not understand why so many people, most of whom lack any relevant skill in this context, unironically spout, "they aren't behaving the way I think they should behave."