Judging by the tube sight, it's the same guy who was on some of the forums years ago trying to convince us it was a good idea. lol Same type of guy who comes up with products you see online all the time and think "Why though?" You see it for sale and think "interesting idea, but did you really think that would sell? You admire their ingenuity. Admire their thinking outside the box, and how they stuck to it for years to see their dream realized and finally get produced.
You also feel bad for them, knowing their dream is dying on the vine, that all their time, effort and possibly life savings are gone. You also think.. are you an idiot?
That's also the reason you don't want to shoot single action revolvers with a partially loaded cylinder, higher pressure big boomers in particular. Even without the contraption, with the right (wrong) combination of things you can get enough pressure back through that chamber to bend the loading gate.