From the transcript

A lot of people, uh, a lot of scales grab fish by their jaws or by their snout or by their gills. And for these bigger fish especially, that can cause some internal damage as the weight of the fish is pulling on it. So a safer way that's easier on the fish is to keep them in the net bag. And this is where having a rubber net or a knotless mesh net is, uh, really beneficial. And the net bag will cradle the fish when we lift it up to weigh it, so you're never actually hooking the scale to the fish.