No kidding! It always seemed to me that half of the contestants didn't really know a ton about what they were doing as the judges/experts pointed out seemingly obvious flaws in the commentary. But something tells me (as you'll probably learn as you gain experience if you keep doing it) that it isn't an exact science and does have an element of art/feel to it being that it's hand crafted. Probably also didn't help that they were using equipment that wasn't their own, might be a learning curve if they have a different way of doing some things.
It is the perfect “on in the background in my hotel room for 4 hours” show. You can jump in at any point and not need any catching up, and it’s low stakes enjoyable. The skill level of competitors seems to have increased significantly from the first few seasons.