People watching me work in person can see things no one can see on video. The machine looks to be flying on video because it moves from side to side of the frame which is very different from the real experience. Don't get me wrong, I'm still pretty quick but you can see where my eyes are focused and see the defects I'm looking at and attacking and that makes a lot more sense than what shows up on video. Also, you can hear the speed changes and pressure differences in person you can't hear as well and can't see as well in video.
I'm not saying I like the way the guy works or the tools he's using - this isn't an endorsement - but without being able to see the finished product it's hard for me to be too critical. Also, since I judge on the value for money standard if he's charging a price that's commensurate with his product, he's doing just fine, lol.