At the second video at 0:27 there was not enough time between edybac's first shot and second shot.
edybac says he's shooting double by every single shot cause of his "bug", but in this last video at 0:27 he almost did a continuous shot without do double or quad shot. Clearly, edybac is rapidfiring.
He tried to be subtle, but he couldn't handle it. So he's trying to sell us the idea of the existence of a new bug, lmao.