They held a "primary" where the party apparatus has already agreed to fall in line behind the sitting president and push through with no debates, where the only candidate on every ballot was Biden?

The primary where a mass movement still spontaneously grew to explicitly tell the democratic party that they weren't committed to Biden which got 700,000 votes (almost 5%)?

Even ignoring the absolute undemocratic nature of the DNC primary as it existed....The primary in which Joe biden, not Kamala Harris won. While the only primary Kamala Harris ran in (2020), she was the first candidate to drop out thanks to total lack of support...

Yeah... Everyone can look these things up. No need to defend absolute failures of the party, it would be one thing if it worked, it didn't.