Most people just don’t know that much about Kamala, she’s fairly new to politics and hasn’t been in the limelight very often.
Usually just a small handful of speeches and interviews, maybe. She’s largely an unknown though. A Presidential race would change that quickly, though its hard to predict exactly how.
Notably, the right has used her largely unknown status to smear her for years now, not too different from how they got an early start smearing Hilary.