Bernie Sanders has been the best we, the voters, have come up with. Biden and Harris were both offered to us as the only choices rich people would accept

Because the candidate doesn't matter anymore. You will get some shit propaganda narrative hammered into your brain anyway (see: "vote for Trump so there will be no genocidal war in the middle east").

So why would democrats care about anything else than their own internal power dynamics? It's not like they can get a good candidate when collective brain-damage will make sure that it's a totally useless candidate anyway once the screeching morons on (social) media tell you what your new reality is.

Disclaimer: I'm not american.

For me, major fail from Democrat side was to not acknowledge Biden's mental state, actively hide it as if he's going to run 2nd tern no issues. Kamala was chosen not by people but by a party. She is vice president, no primaries happened, she has to run I guess.

So many things could've been different but they weren't. Bernie should've been president before or after Obama, but here we are. This whole shitfest so called US politics is an open book with pictures and examples of who actually runs this country and for whom rules and laws are written.