I agree that”day to day” shooting by Joe Average doesn’t go to the extents competition shooters did and still will, but then again, they’re not competing.
Those who are into the buckskin rondy thing to just hunting probably won’t weigh charges and that’s ok for them but there is a part of the muzzleloading community very interested in wringing out every possible bit of performance, some for accuracy, others for power. Each pursuit has a different path and tolerance to variable control, read consistency.