Do you think "we" as voters didn't want a primary? It's party insiders the whole way. And if you vote for Biden anyways, you're saying "yeah, i liked how this worked just fine." DNC screwed bernie twice, and RFK, Marianne, and Dean this time. Regardless of who you would back ultimately, the DNC removes all democracy from the process then says they're saving democracy.
Here's an explainer: https://www.npr.org/2024/07/21/g-s1-12556/kamala-harris-coconut-tree-meme-context-unburdened