You're a new reader aren't you? I've been writing about Harris' shortcomings as VP for ages. Here is a selection of those articles:

https://medium.com/politically-speaking/vp-harris-continues-her-streak-of-press-conference-mishaps-beb262550ff6

https://medium.com/politically-speaking/kamala-harris-continues-to-hemorrhage-staff-fcaa23eba25d

https://medium.com/politically-speaking/vice-president-harris-starred-in-a-deceptive-youtube-special-df6950393b63

https://medium.com/politically-speaking/vp-harris-fails-an-interview-again-e9aca3d0559a

https://medium.com/politically-speaking/the-reason-why-vp-harris-first-foreign-trip-did-not-go-well-b37f1ec64678

The problem is that she resists being briefed and refuses to stick to a script. Despite being a very, very smart woman, she hasn't grown in her role because she doesn't seem to want to learn, She has an enormous blindspot when it comes to politics.