Is there something about Newark? The most frightening experience I've had on a commercial flight is breaking out of the clouds on approach to Newark and finding ourselves at an absurdly low altitude over a warehouse roof. Throttle up, go around, no comment from the captain.
It's in one of the busiest airspaces in the world.
Lots of old airports are a clusterfuck. Those places were built in the middle of nowhere 70-100 years ago but now find themselves practically inside the megacity.
Increased traffic and incredibly complicated approach routes does the rest.