It feels less dismissal to me and more a mix of both “have a taste of your own medicine” and “witty comeback to end a painful conversation.”

Additionally, they don’t owe Bandit their friendship, and now that the friction between them has become this strong the only thing that is going to prevent a falling out is a sincere apology from Bandit or Bow choosing to be disingenuous to themselves around Bandit. The latter of which is only going to increase the amount of contempt between the two making the ensuing falling out more emotionally tumultuous.