There's a 50% probability that RFK Jr will be a part of the future administration, and I believe he is sufficiently motivated to force Trump to uphold his promise.
What makes you think Trump will do anything RFK wants after RFK endorsement of Trump led to a majority Harris polling bump? Did you know Trump hasn’t invested in any down ballot races and is on track to lose the House as a result, meanwhile Harris is investing tens of millions into down ballot races for a chance at securing a congressional majority? Dysfunctional governance is all we can hope for under Trump’s administration.