I think the reason why it was raised was because:
1) Once Dimpy stated that Gautam was a champion therefore there's a certain sense of Loyalty to him and he should not be nominated. Then every body followed after Dimpy like sheeple.
2) After nominating was done and sana said to ali that you said to me you wouldn't nominate me and then you did by justifying that gautam is a champion you showed you're double standards. And Karishma pritam and ali were seen clarifying her that Gautam actually had given us more reasons to nominate but we showed our unity, which was a cop out answer.
It was raised to show their double standards, herd mentality and trying to show the audience that we're on Gautam's side and showing a nice gesture. Well that nice gesture didn't come from a good place at all, their hypocrisy and thought process was exposed.