They're trying out new talking points, unrelated to "Is this lady gonna try to end democracy or not," for reasons for people not to support Harris
She was a prosecutor being another. Of course, that's only when talking to the left; when targeting semi-conservatives who are just too sensible to want to support Trump (which is a sizable fraction of the Democrats' base), I suspect they may soon start trying crypto-bigoted arguments like about her laugh or that she's unstable and crazy. You know... you know what I'm saying.