The debate thing was clownish, for sure.
My recollection of the DNC linkage was that the Clinton campaign agreed to help the DNC in a set of ways (likely raising money for the DNC and helping Democratic candidates) in exchange for some affordances and Sanders refused to do likewise (which, to his credit is on brand). Is that not accurate? I admit it's been 10 years and there have been a lot of claims made as to why Sanders should have been given the nomination in spite of not winning more votes.
https://www.vox.com/policy-and-politics/2017/11/2/16599036/d...
Brazile gives strong evidence here that the process was rigged against Sanders, inside the DNC. No, votes themselves there not altered, but when the arbiter of the process itself is not neutral, that is completely damning, and honestly, i think that behavior has just continued to this day such that we are seeing fed up Dems on the left revolting against the legacy party, causng it to look like it is about to fracture, and become the mirror image of MAGA.
It portends badly for our country.