A few things:
Kamala doesn't know shit about econ, that much is clear based upon her political voting history. That being said, her advisors are clearly pushing her to run a populist type campaign (student loan forgiveness, price and rent controls, etc.) to win votes. I have doubts that she would actually push to enact such policy, but even discussing is quite concerning given what happened with tariffs.
A few of us were always critical of Trump's tariffs and protectionism stance, which certainly contributed to inflation. But, one of the few obvious benefits of Biden winning was supposed to be the removal of such trade protectionist stances. And yet, Biden actually enhanced them.
With Kamala being distinguishingly left of Joe, there are some real concerns about the economy and her likely push to raises taxes considerably (elimination of cap gains, increase in statutory rates, elimination of gift and estate tax benefits - sunsetting in 2025 without any extension, wealth tax, etc.).