It's MAGAs projecting their own propensity for violence upon their opponent.
Violence will occur if the MAGAs fudge with local and county vote certifications, states' certification of its slate of Electors, and get the election thrown to the House for them to decide.
The MAGA plot is create delay, chaos, uncertainty, and doubt around the casting, counting, and certification of votes in every jurisdiction they can.
The best way to counter MAGA is for voters to turnout in such overwhelming numbers, that the Electoral College isn't even close.
MAGA's will object to Blue states' Electors as a last ditch attempt to buy time for what they have planned next.
An overwhelming number of voters need to reject MAGA and MAGA candidates en-masse to break the Orange Fever that has gripped the GOP.
At this point, Congressional Republicans don't have the sense to grasp what it means to lose. MAGA keeps loosing, and they keep doubling down on the same bad bet, like a degenerate gambler would.