I sort of agree with you but I think you're overdoing it. There are reasonable restrictionists, and reasonable restrictions. Like even most gun fans agree fully automatic weapons and RPGs shouldn't be privately owned. High-capacity magazines are more debatable and there's no clear line--but 50 or 100-round magazines, I think there's a reasonable argument for banning them.

Focusing on cosmetics is silly, and some advocates of restrictions would just as soon see all guns gone, but I think most people just want to see common sense applied.