I'm having problems rationalizing what you're trying to get to. You admit "the DNC stacked the deck" but you don't think that effected his outcome? You ran on the campaigns but have completely forgotten about the Nevada scandals involving unions and the caucus or what happened in SC when the DNC pressured high profile representatives to back Biden instead of Bernie (of which historically Biden has been horrible for minority communities). These are just off the top of my head, articles and references if you need them and I'll make sure to find you some more to help with the analysis.
Seems like you're splitting hairs trying to form some type of narrative. Democratic primaries have nothing to do with the two-party system? You'd have to completely wretch out decades of political knowledge from my head to even consider that nothing is connected. If there's a real, viable point you're trying to make besides "nuh uh", would love to be exposed to it.
I would like to encourage more people on this platform to humbly bow out and respond with integrity when they don't know versus the "20 replies of arguments" that drown out the conversation. You might be correct but I think your response is in poor form (unless we're just celebrating being the lowest parts of social media).