Don't be fooled by the talking heads: this isn't complex. The official Republican stance is out in the open. They are attempting to destabilize our democracy in order to maintain control. They're banking on you not noticing.
What was Cheney's sin? Kinzinger's? It was attempting to figure out what's driving the most severe danger to American democracy since the Civil War. They are well aware that Trump and the Big Lie pose an existential threat.
The Republican Party has abandoned the American experiment. It's that simple. There are no longer two parties. Trump is quoting Stalin. His cronies are doing much worse.