Treating anyone who would remotely consider voting for Trump as both stupid and/or evil is condescending. I don't believe Harris said any of that out loud, but the way the entire campaign was conducted grossly underestimated what was actually important to most voters (which is again condescending) and we all paid the price for that. They assumed they were going to win by a significant margin because they were on the side of "right' and of "good" and a lot of mainstream media bought into that.
If we don't pay attention to what real Americans care about and want because we "know what's best for them" we're going to keep getting more of the same (and that's not what I want).