Should they be banned? Absolutely not if you wish that upon then it's because of a "I worked hard for this and I'm jealous that he beat it an easier way" type thing which is kind of pathetic. From my experience with my raid group it actually seems easier and more fun to just best crota legit. Me and my friends kill him legit all 3 times within an hour easily. I would probably have more trouble trying to abuse him than i would just fighting him the fun/legit way.