The politicians taking the election-was-fraudulent "posture" now are the politicians who will not receive the benefit of the steal in future elections.
Who do you think that these posturers are trying to impress? Certainly not the stealers. And since the stealers have the power to steal, what would be the benefit of taking an election-was-fraudulent posture.
Certainly not the stealers. And since the stealers have the power to steal, what would the benefit be of taking the election-was-fraudulent posture.
Thus I would not call their motives, "posturing".