The video description does give links to the software necessary to get this up and running on PC yourself, if you have a Kinect sensor bar. Beyond that, it's fairly simple: stretch your arms out like an airplane to crank the throttle, lean back and forward to control pitch, to the sides to control yaw and turn, and hard to the sides to roll. Kicking to pull up the landing gear is a great move too.
I do like that the gesture to bail out is throwing your hands up above your head as if trying to punch out the canopy of a fighter jet. To see this content please enable targeting cookies.
And yes, absolutely he's planning to do this for Microsoft Flight Simulator too. Now he's here T-posing, pretending to be a plane through Microsoft's motion sensor.
I don't know what's more surprising: that someone has set up a Kinect to control aeroplanes in Grand Theft Auto V by holding his arms out like a kid pretending to be a plane on the playground, or that he didn't make speed controlled by how loudly he shouted 'Nyoom!' This is the latest work of Eric 'Insert Controller Here' Heckman, a YouTuber known for his weird custom controllers (including one to ragequit by pouring literal salt).