There was nothing successful about this cycle. We live in a post-truth world, and it may be unfixable.
But pleasing the bulk of progressives (meaning idiot hippies who have nothing going on but attention for temporary media outrage) is not going to repair the Democrats. The Democrats can only succeed if there is a consensus reality, and there is no longer one.
Your links are trash, and I've already dealt with them.
Am I supposed to be sad that the Dems fought to keep RFK Jr from being a useful idiot for the GOP, and tried to stop him from siphoning votes? You know, the guy who is now going to run amok in the Trump administration with his deranged ideas about healthcare, as a thanks for his efforts?
Am I supposed to be sad that the Dems fought against Jill Stein, a widely-known Putin-funded tool for years and years?
Fuck no. It isn't a betrayal of the ideals of freedom, representation, and democracy to fight against obvious sabotage of the system. There are always fools like you who will do the GOP's work, and try to stop the Democrats from fighting them from perverting the system. You're a tool of your enemy and too dumb to know it.