I'm not sure how to parse what you're saying. As far as DNC rules are concerned, they "call" it once all primary races are held.
I believe it means that you weren't paying attention during the 2020 primaries or the news around them then. The DNC Does not wait and did not. Claiming Biden the Presumptive nominee ~~38 days~~ (that number is from 2024, media declared him presumptive nominee in a period about 4 days longer in 2020 still faster than trump in 24) after the first delegate picked. Obama took 120 days. To give you an idea of how fast that was, faster than Trump's nomination in 2020. (43 days)
You are correct though. The primary eventually went the way it went. He lost it by the rules but there is a reason people don't feel good about the rules presented and that needs to be dealt with.
I would also just want to finish with the simple, how is pointing out how popular his rallies were be a negative to his electability while being an usurper to someone in social and legal discourse?
Of Obama for sure. Actually passed stuff instead of worked in them and everyone sorta patted them in the back saying "good job, at least you tried" about stuff.
A lot of those bills were basic spending bills that would have had to pass anyways with a title. Resuming loan forgiveness as it is written was nice but was hard to view as a positive and without the right PR completely missed as a positive by many.
Which is his biggest mistake. We didn't hear about his cabinet. No big speeches and pushing of younger replacements. No bully pulpit. Kamala showed up to break a tie a couple times but they just did it as a formality.
Being the president isn't supposed to just be a business man managing the books but the face and inspiration of a nation. It's a social role as well as functional. He failed that job completely. He was the right president for the wrong time. Him not accepting that made him worse.