If the Democrats actually believed anything even close to their campaign rhetoric about Trump being a criminal insurrectionist, they would now use their SCOTUS-granted authority to just have him black bagged. It's now explicitly legal for Biden to do that if he genuinely believes Trump to be a threat to democracy, since safeguarding the constitutional order is directly within his remit as President. It would be an official act to neutralize an apparent threat to the nation, which is literally one of the explicit examples cited of something presidents are now immune to consequences for.