Simple. They've noticed. They just don't care. Reason? Cash-cow. Heck, instead of addressing all these problems, they're hosting a "Bungie Bounty" event where you get a (very, very small) chance to beat them in the Crucible. The small chances being that the events last for 1 HOUR, usually once a WEEK.
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And you get a -blam!-ing shader. Beating them should be an exotic engram guaranteed for class.
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A shader? Last i read, it was some stupid Emblem.