(sorry if they go into this, I can't watch the video right now but I know about alternative prop designs on quads)

These things are so awesome for steady, predictable trips but hey lose a lot of appeal for hobbyists because they're more expensive, fragile, and finicky. And that's made worse by sizing them down for FPV quads. Don't want to snap a blade when you're mid-air and especially not when you're navigating to your target