Black fight back. Brown lay down. White good night.

Yes, black bears are the more docile compared to grizzlies. You are supposed to try to scare them off if you aren’t able to avoid them.

This one looks young enough that it’s 50/50 on whether mom is near by though. They should have gotten up and left while it was distracted by their food.

Usually yes, but it kinda depends on the bear. Some are so habituated to humans that they won't actually give much of a shit if you start shouting at them. I wouldn't be surprised if this bear has spent a lot of time dumpster diving and/or stealing food from campsites, to the point where it doesn't bother wild foraging anymore and it is not longer concerned by humans and the noises they make. For a bear like that it might be necessary for a game warden or park ranger to tranquilize the bear so it can be relocated to a more remote area. Such a relocation might actually be a death sentence for the bear though, if it never really learned how to survive in the wild.

Edit: I'm actually staying in an area right now that has a significant black bear population. All of the garbage cans are bear-proof, and there are stiff fines for leaving unsecured food or waste accessible to the bears. It's all part of an effort to avoid having bears end up like the one in the video.