Javed Akhtar was very fair when he did not take Arijit to task for voting Shamit out.
At Kirti's time, Javed Akhtar told Shamit in no uncertain words that what he did was wrong and he should be ashamed of him. Moreover, Shamit was unable to endear himself to the judges or the public - by saying that he was selfish, I want to win etc.......
So, in keeping with Shamit's overall attitude, Javed knew that sooner than later, Shamit will vote out Rex, Arijit, RR.....since he was pairing up very strongly with Arpita.
What happened was that justice was served. Shamit voted Kirti out... he was also voted out on the same grounds.... it was all fair and square