All demonstrated poor range safety and etiquette. One of them even ND'd on the concrete floor.
If that's the case, then that should've been brought up to the range master. Other than that I'm not sure I get the thread. I own both newer and older firearms and would hate to be discriminated against because I own and shoot newer firearms.....but then again I see it more and more, the dividing line between firearms enthusiasts that should'nt exist and that's gonna hurt us as a whole in the end.