I have been a frequent flier for over 30 years. I have seen the airports become chaotic and the airlines become a miserable experience. I can’t imagine 575 passengers from one plane trying to pass through immigration and security and make their connections in US airports. It has become a nightmare even when flying 737s.
I was on an AF A380 that had an aborted takeoff at CDG with subsequent cancellation of the flight.
Imagine 575 passengers having to reclaim their baggage and rebook their international flight and connections.