There's always going to be IF's, but "IF" you want to see the accuracy potential with the RDS as used, it's possible to shoot groups substantially smaller than the dot size. Is it the most practical - no, but hammonje - it's absolutely possible to line up a rifle on a benchrest, run some match rounds through it, and shoot tight groups regardless of the optic used. The center of the dot could be yards away from the POI, it just needs to be consistent.
Simple mechanical accuracy can be a useful and valuable metric for a rifle, but coming back to it from an angle of actual application, those ifs don't matter nearly as much. Odds are in a carbine with a reflex sight the real goal is to turn the brightness up a bit higher to acquire the dot quickly and be able to engage a target somewhat accurately, but very quickly.

