Not true. The system suppresses third parties. It doesn't stop them. Parties fall in the US just like everywhere else. When was the last time you spoke to a US whig? Or a Jeffersonian Republican? The system in place when those parties fell was exactly the system we have now. It just takes a massive popular effort and a period of severe political turmoil where the country is heavily divided along party lines and a large portion of the country feels entirely disenfranchised (ideally about a 1/3, 1/3, 1/3 split between the two parties and people fed up or greater). Happened at the revolution. Happened at the civil war. Happened at the great depression. Guess where we are now? Don't let yourself fall for the lie that the party is eternal. We're on the knive's edge now. It's time to push
Despite what the media wants us to think, both parties are wildly unpopular with their own voters and are primed for collapse. Literally all of the conditions historically needed for social revolution have been met
Their head. They still think they can teach bigotry away. They haven't learned fixing strangers isn't their job yet