This is excessively downbeat. Napoli is not Ethiopia, come on; at the very least, it is under EU jurisdiction, which means access to EU grants and markets. Italy has its problems and Napoli adds some more on top, but it’s not a third-world city.
Napoli is considered to be "the black sheep" in Italy (disclaimer: I'm italian).
People drive on sidewalks, 3 people (full family on scooters) without helmet (that was the first thing I saw while getting in).
It's also much more terrible at mafia level than you can think of.