I’ve met a lot of hard inner-city people in my life who wouldn’t lift a finger to help another person out, let alone someone who was doing him no favors. I suspect that’s always been the case, hence the story of the Good Samaritan still makes the same moral point even today.
We see these kind of stories about people who call 911, it is strange.
Only a rare weirdo would have just sat there incurious, or totally passive, it isn’t just an instinct to help, but to do something, especially when you and another person are together and the other person passes out.