Excuse me, but right there is the problem: Biden and many Democrats fundamentally misread what happened in 2016. To them, Trump is a temporary aberration, before the usual status-quo politics can be restored.
But Trump was more a symptom, rather than the cause of extreme political dysfunction. Electing Trump was a kind of primal scream by millions of voters fed up with a broken political system with out-of-touch Washington political elites of both parties.
And Trump will, of course, go away, but Trumpism will likely stay.
For my money, the quote of the 2020 race came recently from Democratic presidential candidate Rep. Tulsi Gabbard: “What does it matter if we beat Donald Trump if we end up with someone who will perpetuate the very same crony capitalist policies, corporate policies and waging more of these costly wars?”