Except he did say he had turned off motion interpolation, so that leads me to think he just doesn't understand that 24FPS would look like a weird video effect depending on if your mind has been trained to think 3:2 pulldown'd 30fps is the look of film or not.
For some people 24fps on a VRR TV with a 120hz max refresh rate would be perceived as a "weird video look". Especially if their brain has been trained to accept 3:2 pulldown'd 30fps as the look of 35mm (of course it isn't). I myself can attest to that first hand. Eventually you will get used to it.