You can do interesting things with the camera angle/perspective.
Several years back there was a similar video of a 787 at an airshow (I'm thinking it was Paris but wouldn't swear to it). There was some outrage expressed on PPRuNe about how dangerous it was and the excessive bank and climb angles. I just happened to run into the Boeing pilot who was flew that demo and asked him about it - he stated they never exceeded 45 degrees from horizonal at any time (either climb or bank) - although in the video it appeared to be
well in excess of 45 degrees. He said that was all due to the camera angles and perspectives.
He also stated they practiced the show routine numerous times out of Moses Lake (central Washington state).
Several posters on PPRuNe who watched the video called BS on the 45 degree max, but they only watched the video - the pilot was actually there
.