Pretty sure the new X7 camera can focus rack and pull now and obviously has a few interchangeable lenses. Not invalidating the difference between Red and DJI cameras, but as we can see, things progress quickly in this space. I don’t know if DJI wants to compete with Red anyway - after all they were originally a drone company who got into cameras. They still produce the drones that many of the $100k cameras fly around on...
Edit: should have watched the film first; he mentions the poor quality of the iris racking on the Inspire. I assume this is relatively new and that he’d be using the X7. I’ve not used an Inspire before, but would be interested to know if they have fine stops rather than a true infinitely fine adjustment.