Its interesting that when I watched the video everything that he did seemed perfectly normal to me. With the exception of cutting the copper wire with my fine tying scissors and the complete removal of the tip of the partridge feather - I leave a small triangle of feather at the tip - I would tie this fly exactly the same way. I learned to dub my bodies like that nearly 50 years ago now and I still use that method today. However, if others do it differently and it works for them then they should continue doing it that way. Only the fish will tell you if your fly is correct.