No matter what you use to charge cases or how you do it, getting the correct charge in there is the most critical part of reloading
No, it isn't. Or not always.
With some powders, like 4064 in .308 , +/- .3 gr shows no discernible difference in group size or velocity over carefully weighed charges while seating depth variability of as little as +/- .002 will change poi with many vid bullets. Also, I would rather have some modest variability in powder charge rather than even just .002 of run out in my comp loads.
Folks give powder weight more attention than they should relative to other factors.....Probably because it's easier and cheaper to measure than other factors.
And reloading speed matters a lot if you are shooting tens of thousands of rounds per year...no need to weigh each charge making 3 gun ammo or steels ammo, or semi auto pistol ammo.
I'm not saying I don't weigh charges, I just know that worrying about powder weight to the 1/100th of a grain is pointless. Many many many many Palma, IBR/ service rifle, f-class matches have been won with thrown powder charges.
The only powders I weigh anymore are those that do not meter well like H-1000, Retumbo etc.