Of course they know Trump was a disaster. I hope it doesn't mean they've given up on changing the corrupt system.that were "outsiders" have been speaking at the DNC...Sanders and AOC most notably.
I wonder if they've realized that politics is evolutionary and not necessarily revolutionary. Politics isn't about passing purity tests. It's about moving forward if you want progress.
Or they realize Trump really was a disaster, more than they ever realized was possible.