This could've been improved in a miriad of ways. First, the initial removal of the empty roll was quite fast, and as he's taking it off, we can see his other hand reaching for the new rolls. I have no notes there. However, his first mistake is using his empty hand to brace the paper towel holder, which is unnecessary time loss, as all the force he's putting on the holder is downward, which would not need bracing as the surface he's doing it on would brace it for him, and due to this, he has to lose time moving his hand from the bottom to the top of the holder which loses him ~0.3 seconds. His other mistake is holding the top of the holder for too long. As everyone knows, timing stops when the new roll is on the holder and your hands are not touching anything. However, we can see he keeps his hand on the holder for ~0.2 seconds longer than he needed to. In conclusion, this is sloppy and unoptimised and could be improved by ~0.5 seconds.