Last, about Brooklyn vs. Manhattan - I think quality of life is significantly better in much of Brooklyn than it is in Manhattan. Why? Easier access to essentials, better transportation, cheaper real estate, green space (unless you live near central park), better public primary schools, etc., etc.
There is alot of half-truths, and a lot of wrong information, in this statement.
"Easier access to essentials"
What 'essentials'? besides, everything in Manhattan is walk-able. Access is also irrelevant to a multi-millionaire for most things (you are going to have your food shopping delivered, for example).
"better transportation"
The subway is way more efficient, and covers more area of Manhattan than it does Brooklyn. Taxi and uber is a taxi or an uber anywhere.
"cheaper real estate"
its not 1988 anymore. There are some brooklyn zip codes (the ones where someone like Panarin might want to live) that cost more for housing than a big share of Manhattan. Its cheaper to live on the LES than it does in Park Slope or Greepoint these days. Sure, you can find a great deal out in Carnarsie, but surely thats not what Panarin is thinking about.
"green space"
there are many large swaths of Brooklyn that lack green space. Most of the Brooklyn green space is either in Prospect Park, or our to the east along Jamaica Bay (again, not a place i see Panarin going to relax). I'd much rather live up near Riverside Park than near any greenspace in Brooklyn.
"better public primary schools,"
First, the best public school in the country is in Manhattan (Stuyvesant). But again, if we are talking multi-millionaires, they are going to be using private schools, anyway (again, Manhattan wins out).