Liberals don't truly care about harm reduction, they mainly just don't want to be "owned" and laughed at by chuds again like in 2016.

It's primarily an ego thing.

If Trump wins again now in a rematch and gets a 2nd non-consecutive term while their guy dies forever remembered as a 1 term loser (Let's be real: Biden's body, mind or both ain't making it to 2028), that's arguably more humiliating than if Trump had just won 2 times in a row, and they know it.