While I think sedition is probably more legally accurate, a case can be made for treason because we have an ongoing conflict with terrorists. And YES, it does send a shiver down the spine of the deep staters, because treason is punishable by execution. Treason carries with it the scorn of society and these deep staters who have carried on without thinking through their actions and words had better be extremely nervous now. They ACTIVELY tried to bring down the sitting head of the Government.
Sedition would pertain to those outside the gubbermint. Not in positions of actual power.