Tbf, the Democratic party nomination process is not a 2-party system. They did say that back then, and they were wrong to do so - hoping that people wouldn't notice that difference.

But now we are talking about the real deal, the thing that they were trying to falsely tie an equivalence to, the actual vote for the actual presidency. Democracy in the USA may not last the decade regardless, but voting one way is for ditching it in favor of Project 2025 and among other things, ironically enough even moar-er support for genocide, while the other is a vote for hopefully a little better than the current status quo.

Both offer short term pain and long term destruction... but not equally so.