>>42334845
>Pinkie could just convince others to fight n her stead.
Except they all turned on Pinkie. Also Pinkie doesn't have the power she did before Pinkie is no longer able to manipulate Rarity, and Applejack.
Rarity in the past just did what peopel said because she wanted to be accepted, but current Rarity is a lot more confident and independent to the point where she can stand up to Celestia.