But to me, the difference is this: Vance said "miserable childless cat ladies" about people who were Harris supporters. They already weren't going to vote for Trump. But the Democrats are pointing contempt at people that have, historically, been the Democrats' core constituency.

Vance is alienating Harris voters, Democrats are alienating their own voters. In that way, it's different. It's not morally different - contempt is contempt - but it's practically different.