the point was that cutting is shedding body fat, whereas "weight" is a collection of lean body mass, water, undigested food, waste, etc. if you are cutting you should be solely measuring what you are cutting (i.e. body fat) and not taking a composite metric of EVERYTHING of which what you are cutting is simply one portion of.
Uh actually the point I was responding to was when you claimed, "It's still SUPER easy to gain muscle even while cutting." I even quoted it so I'm not sure where your confusion is coming from.