The democratic party does not hate Biden as much as they hated Hilary, although I'd agree they generally do not like him.

His campaign as the nominee hasn't really started as he's still hiding from the virus, but I suspect he will be hitting up the swing states more heavily.

I'd wager he's more of an old, out of touch, feeble, on the path to senile person than he is a bad person, but both are not good. It was definitely more known throughout the country and world what a crappy person Hilary was, than it is about Biden, and this is partly because of the media hiding or refusing to cover a lot of it.