Has the ever-unpopular two-party system actually been our saving grace in the Trump era?

[Cashew]

Saving Grace? It's what incentivizes so many conservatives to stick to Trump in the first place! Under the two party system any action taken to harm the Republican party benefits the Democrats even if indirectly, therfore if you want the policies you favor enacted it can seem reasoanble to defend the leader no matter how terrible they are. Under proportional represenatation however weakening one right wing party woudn't necessarily strenthen the left becasue conservative voters would have the option of shifting from one right wing party to another. Having multiple option to choose from makes it pontless to defend a bad leader because you are free to walk away and have you vote matter just as much in another party that still shares some of your beliefs.