Bungie patches things that makes them feel the Destiny players are owning them.
They keep the stuff (flaws and bugs) that makes them feel they are owning the Destiny players.
What a sad bunch of needy swallen egos without substance and honor these people must be.
Edit:
What Bungie does is to force players to play this game exactly the way Bungie wants it to be played, including the "social" experience. Just look at how they made it harder to solo nightfall and weekly heroic strikes, or how they fixed cheese spots and tactics (nothing against that per se) but leave flaws working against the players in the game.
That's pure arrogance on Bungie's side.
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Bossing the players around obviously is Bungie's most urgent and central desire.