Might as well ctrl-v my BK post then.
"They're spoiled Canterlot celebrities. Good fliers they may be but they're personalities leave a lot to be desired.
Dash is realising she's as good as any of them as a flier, but that she doesn't need to be part of their group to feel validated now, Twilight and the others fulfil that need, and in a far more healthy way, Dash knows that now.
The same as Rarity, I think we're going to have these 6 episodes this season to show them finally getting to see the reality of the dreams they've held, how it falls short of what they expected, that the people they wanted to join, are not only fallible, but deeply flawed.
They're growing beyond their dreams, finding everything they needed in each other."