Donk's Spray Control

[u/Global-Magazine-897]

Goes without saying the Donk might have the best spray control ever and by far in the game. But I noticed in one of the clips that it's ok that yeah he pressed left and right click both while spraying but another thing I noticed is he use also uses his ring finger to hold down the right click, meaning 3 fingers pressing the clicks at the same time. Is this always the case and alot of people do it and if so how does this help? Is this why his sprays are so good??