I saw a video of republicans outraged because someone was apparently trying to change the voting system to use ranked voting, and this would destroy the two-party system (yt link) which apparently would be a horrible thing to happen

Strange that they worship the founding fathers so much and insist that the system they put in place is perfect and must never be changed when John Adams wrote (google books link):

There is nothing which I dread so much as a division of the republic into two great parties, each arranged under its leader, and concerting measures in opposition to each other. This, in my humble apprehension, is to be dreaded as the greatest political evil under our Constitution.