I really do think that most folks now understand that.
The Democratic Party establishment & its most fervent base voters, though, are so blinded by fear (or envy) of Trumpster & the Right's successes in transforming the political system that they feel no recourse but to defend the status quo as the only practical alternative to total right-wing control.
Of course, this ends up rewarding the most conservative faction of the party, which undermines any chance of progressive change...