@gkmizuno The resolution to the paradox comes from noting that you're begging the question.
This is the core of the quotation that I think you quoted above.
IS an insurrectionist holding office? That itself is the question. Without the legal determination that somebody is an insurrectionist, legally there isn't an insurrection is holding office, even if you are I personally believe that person to be an insurrectionist.
As far as the law is concerned, there's no problem with that person in office, because they have not been legally found to be an insurrectionist, so no paradox.