I don't think they will sacrifice the two party system, simply because there is no two party system to sacrifice. It's a one party system with two sides. They will simply become Republicans.
That's perfect! That's one way to blow up the two party system, whether they make participating illegal or third parties emerge, the results still end up with our numbers swelling and the radicalization of millions of Americans, DNC neolibs becoming Republicans is the best case scenario, they'd lose most of their base and it would destabilize the Republican party
And the necessary radical movement that could contest the powers of the US leading to a focus on internal politics simply doesn't exist and likely won't for decades; that's a question of pure military logistics, the left would need numbers that could sustain and absorb military casualties exceeding the levels of the Spanish Civil War at the least, that's requires a base of tens of millions, not hundreds of thousands of dispersed online radicals
We are stuck in legalism because to do anything else will see an individual in the trunk of a burning car with bullet holes in it, the fates of the first BLM organizers should be in every leftists mind because those are the stakes and yes I will tolerate socdems getting elected if it means the left can grow to the point where those deaths come with a hefty price for the state
We have to think much more broadly, and much more long term.
I agree, this plan is merely the first step, going from zero to one, the emergence of an independent Worker's party with national reach doesn't imply anything about it's success or it's ability to actually contest power, the only benchmark now in 2026 is mere existence