These people aren't talking about a "party" in the sense of an organization of socialists working together to build a real working class movement, but rather specifically a ballot line organizing around electing non democrats. Thats why MPP is deeming DSA traitors and saying they're standing in the way of "the movement", because they want to get disenfranchised people to join their party and just run a ballot line thats specifically not democrats, and to what end? They're going to run a bunch of failed campaigns and get disillusioned with the whole process and waste time and resources. People organizing in DSA are advocating actual strategies to continue building the movement, and a separate political party is one of those things thats being advocated and discussed and if thats what interests you join the org and actually work on strategizing around that tactic. But thats not glamorous of course, so people want to just shout that we just need a third party. Well theres already dozens of them and have been and they havent worked to do anything. And who's we? Why dont they say a socialist party? Why dont they talk of real organizing work? I dont buy this kind of shit that just turns into a circus like MPP.

Revolutionary unions. Revolutionary militias. That's what's missing. Economic power and military power. Forming a party is the easy part. Unions and militias dont need parties, they form spontaneously, with some pushing by radicals. Personally I'm in favour of direct democracy, so I'm suspicious of parties. But in the context of liberal democracy, parties are still useful.