Harris's word salad speeches are almost as unintelligible as Biden's ramblings. The awkward cackle she does is just the cherry on top. It reminds me of when Stephen Colbert asked her why she agreed to be Biden's VP after heavily criticizing him (particularly for his work with segregationists to oppose bussing.) She cackled and said "It was a debate!" Like most politicians, her principles are for sale. Of course, it probably helped knowing that Biden shared her support for harshly penalizing non-violent offenders.
As for making it about policy, I'm not sure running on inflation, stagnant wages, a homeless crisis, a border crisis, and funding more wars than Trump is an effective strategy.
I suppose she can point to the few crumbs they've given people, such as the weak infrastructure bill and eliminating some student debt. Of course, that debt doesn't just disappear. US taxpayers will be on the hook for it. That might not be a problem if the economy was doing well for the lower and middle classes, but as per usual, it's the wealthy who are benefiting. The majority of Biden/Harris supporters are likely upper-class neoliberals. The election isn't about policy for them, considering they'll be okay no matter who is in office. What they're interested in is civility politics. They want a president that gives lip service to democracy, speaks in empty platitudes, and isn't a boor like Trump.
The only true continuity is that of imperialism and economic inequality, which is maintained regardless of whether we have a Democratic or a Republican administration.