The Democrats are going to offer up whichever neoliberal emerges from the pack, preferably one that checks a diversity box or two (this puts Harris out front for the neolibs), and they are going to marginalize the voices from the left.
Not sure I’d bet on that. In the end, the “establishment” could well decide that the “electable” candidate is Joe Biden.
The problem, as it was in 2016, is the Dem Establishment’s terror at actually letting the primary process play out and having to campaign for an unwanted winner. So, they game the system in ways the Russians could only dream of to avoid that reality. I don’t know what you call that process, but it’s not “democracy.”
While on the other side, the GOP seems perfectly OK with putting 20 people on the state (in a non re-election year) and seeing how things play out.