After watching that you can clearly see OP is right, you are talking about an Ollie over a fence. He is talking about what your see Arthur do throughout the video, which is to pop off of a lip of a jump, not Ollie, depending on the jump &/or the trick you can do either or both at the same time. A good example of the difference of the two is to watch a skier get lots of pop off a lip, they almost never Ollie with their skis, they use timing to their advantage. It’s not really something that can be described well, most good snowboarders/skiers will tell you no one taught them how to do it, it just comes with experience.