Of course, if they truly cared, they could've gone to her website and read about her policies themselves but some people are just lazy and prefer to stick to listening only to debates, interviews and media, both main and social.
I felt I knew where she stood on many issues so I don't know where the people you know are coming from because we've been exposed to different things.
But while the candidate could have done better, I also feel like a candidate is sometimes stuck at the behest of what they're asked when they're in a debate or interview and both Hillary and Harris got too many questions about Trump. Or criticism for not being detailed enough while he seemed to absolutely skate on not having policy or details. They're held to different standards.