You are correct and these wackos from this article failed to do any research. Probably had a deadline to file by for pay.
The new House takes office Jan 3. Biden’s term of office ends Jan 20. They do not get to remain in office because the House refuses to seat the new President.
Besides which, they have quite a few non insane extremists on the Dem side. They would likely not have the votes to stop the constitutionally required Electoral Vote counting.
They are going to declare Trump an insurrectionist to throw him off the ballots. If they can get away with it.
They left out the part that if the Democrats take control, they’re going to label Trump an insurrectionist denying him the right to run.