I would argue the 2016 is a better reflection, in 2020 there was a sort of coordinated drop out of centrist candidates on Super Tuesday as the establishment wing of the party threw their weight behind Biden.
But in either case the answer is that the Democratic Party is basically a coalition party of centrist Dems that seem to be fine with shifting further and further to the right and more progressive voters. In 2016 it was pretty evenly split so there is appetite just not enough for a viable party.
We have data so that we don’t have to go with our guts
You can check out the vote totals
https://en.m.wikipedia.org/wiki/2016_Democratic_Party_presidential_primaries
https://en.m.wikipedia.org/wiki/2020_Democratic_Party_presidential_primaries
I would argue the 2016 is a better reflection, in 2020 there was a sort of coordinated drop out of centrist candidates on Super Tuesday as the establishment wing of the party threw their weight behind Biden.
But in either case the answer is that the Democratic Party is basically a coalition party of centrist Dems that seem to be fine with shifting further and further to the right and more progressive voters. In 2016 it was pretty evenly split so there is appetite just not enough for a viable party.