You mean the one he postponed until months after the date Trump had already signed a deadline for?
Biden took the political hit by doing the right thing and ending the war - No prior president did that.
Harris in particular, led a weak and energy-less campaign, disappeared for 6 month after losing, didn't do or say anything about Trump's terrible start, then reappeared for her book promotion and pinned it all on progressives.
I'm not telling you to disregard whatever good policies has come out of Biden's term, I'm telling you that's the barest of bare minimums, and winning an election against an obviously retared manchild such as Trump shouldn't be that fucking hard. Yet they lost, having down nothing to counter-message his many obvious lies. This deserves scorn, nothing else.