He is not the only one, this is normal now and not a sign of super-rich depravity.
Here in my Bavarian city I can get mangos explicitly labeled "flight mangos" ("Flugmangos" - German supermarket), for example. They look so much better than the regular ones, but at almost 10 Euros per piece I have not tried one yet since I still have dried mango pieces in the fridge.
I don't think they mean food imported from another country. A billionaire sending an assistant on private jet to fetch a jar of his favourite marmalade only sold in a store 8000 miles away because they had a craving for it, the absurd resources required to satisfy it and no concern for how wasteful it is.
"food flown around the world " is very much affordable by the middle class. Tropical fruits, for instance is at most several times more expensive than domestic fruits. They're not going to eat mangoes or lychee on a daily basis, but they're not exactly caviar either.
