Many many many people were saying that the entire time. It has been clear to anyone not drinking the Biden kool aid that he hasn’t been as lucid as he used to be, and many people said that if we had debates and Joe Biden won, at least we would have given others a voice. Anyone who supported Marianne Williamson, Dean Phillips, etc. especially was infuriated there were no debates, just a coronation. Many people were mad that certain states even canceled the democratic primaries. When Biden dropped out, it would have not been that strange for several prominent democrats to throw their hats in the ring - Gavin Newsom, Gretchen Whitmer, etc. and at least have some sort of debate at the convention.
Many people were saying huh? Were they some of the best people? Why does that sound familiar?
If you don’t do anything but glue yourself to CNN, then yes, you wouldn’t have heard about any complaints.
How about many articles in The Nation - here’s one quoting Ezra Klein calling for a contested convention. https://www.thenation.com/article/politics/biden-convention-ezra-klein/
How about a Newsweek article talking about how even MTG is laughing at the democratic party: https://www.newsweek.com/fact-check-do-democrats-plan-cancel-presidential-primary-debates-1796585
How about a really pissed off Dean Phillips in Politico re Florida canceling the primary? https://www.politico.com/news/2023/11/30/florida-democrats-dean-phillips-election-00129403
Breaking Points has also done many shows on Dem party failures in the primaries. Here’s an interview with Marianne Williamson: https://www.youtube.com/watch?v=-AfS7xnz_M4