Haha don't worry about the scrub thing, if you are lucky enough to get good stuff from chest and drops then great, if you use you hard earned coins to buy exotics from xur then you are doing what bungie hoped people would do, these people that think zuring is scrubby have a serious social issue, thinking they earned weapons and gear from random drops have absolutely no idea how the world works, So all in all do what you can to get what you want, maximise your chances of exotics by doing all the nightfalls weeklies and raids