Silencers (suppressors if you must) were regulated under the NFA in the first place because Congress was convinced they were ""sneaky" and not in the image of good, clean living Americans, only of dirty foreign assassins. (Yes, those terms were used in the debates.)
Those ideas and images still remain and can still be used to influence a jury. I agree that the "good shoot" business is nonsense. We are no longer in the Wild West (if such existed outside "dime novels"). Anyone who kills or seriously injures another person, even in his own home, is not going to be congratulated and stood to drinks by the local sheriff. NOT going to happen, so get over that idea fast.