Do you think this is unusual? I'm not sure why you posts videos like this? You don't seem to know anything about bears and make a big deal out of nothing. Boars eat cubs all the time. That's why the sow will try to fight off all the boars that come near. Black bears, grzz all bears do it.
It's what I hate about bears and boars in particular. Thinking about them eating cubs, fawns. Elk calves pisses me off no end. They have a varied diet and don't need to do that. Go kill a buck if they want meat like a mountain lion does. Eating the babies makes me hunt them with vengeance.
I know it's for the wrong reason, but I don't really care. I hunt for deer and elk for meat. I hunt for bear to kill them.