Wrong quote, comrade.
As for accuracy/DMG drop-off discussion, here are my 2 cents. This game simulates a (let's say) 1km span in 100m, that's reducing realistic weapon ranges by 10x. Of course that's far from accurate and applies less to some weapons, more to others, but for the sake of the argument, let's let it slide.
Reducing realistic ranges by the huge 10x amount make it extremely difficult to set correct ranges for guns in relation to other ones. We can see examples of this with the infamous Ntec contending with semi auto sniper rifles and being the most reliable choice within its own role of assault rifles. And now, imo, shotguns being the Ntec of CQC.
I still think the best solution is getting the right damage and damage drop-off numbers, that's my Ockam's razor of seeing the situation. I'm not opposed to idea that messing with any other stats could have a preferable outcome, I just think that doing this right being as hard as it is, more complicated solutions are less likely to work and more likely to cause more elaborate new issues.