Bungie put a lot of research into weapons when they were making the Halo games, but Destiny is far less grounded in fact and much more about space-cowboy fiction. I agree with you this is a non-issue, I mean what about the Vex Mythoclast? Technically it bends time so I don't think the OP really has a case. And besides, it takes all the fun away when you have to over-analyse!