Perhaps it would work for some people. I was toying with it for a while. I was hitting the ball quite solidly, but at the cost of much lower clubhead speed. I did end up with my hands slightly higher at address, but not the extreme of Moes single plane swing.
I might be having the same kind of issue. Usually do the swings in my garage and there hasn’t been much sun around here lately. I try to turn all the lights on in the garage, but get high variance in the numbers, and feel like the low light level has something to do with it. 10-15 mph difference swing to swing. One swing reads 100 and the next is 84. I don’t see the same variance on the high side though. It might be that I’m not pushing hard enough on some swings. I still take the readings as is, even though there’s usually one in there that skews the median to the lower end of the “typical” range.
Sorry about your hand btw, you must have been swinging really hard!