Are you saying people in the middle of the Amazon jungle, or deep rain forest, or in remote areas of the world know about every pop culture icon? Are you really being serious about this? Do you know there are people in Asia that still live in caves? In the rain forests, in the jungles? Simply because you know pop references, doesn't mean everyone in the world will. Some people have never been on the internet, never heard of Google, wikipedia, don't own TV, or radio... DO you know that only 87% of households in America own TV? and even less have internet access... so if they can't get cultural references here, how the hell are they going to know what the hell is going on half way around the world.
Not everyone on the planet, knows Mickey Mouse, Michael Jackson, Osama Bin Laden, or Snooki.... These people are just attempting to survive and get by. Ask a starving child in Africa, or Asia who Mickey Mouse or Osama Bin Laden, do you think they will have taken the time to learn these 1st world problems, when they can't even find food? Visit a 3rd world country, I mean really visit, not go to the tourist section, and ask around, you'll be in for a culture shock on what pop references they actually know.
The fact, that we are able to have this conversations here is still an unknowable phenomenon to a vast majority of the world. Only 1 billion people are online, that means ~ 6 billion are not. That's a lot of people that don't have access to the information you and I take for granted.
Clearly from the story, the guy genuinely didn't know who Hitler was. The guy is try to feed his family, do you think anyone in an improvised country would attempt a hard troll like that? This story is a prime example of how information is not as readily available to ~6 billion people in the world, including people in the USA.
Good luck bros.