This community can only exist because it's a tiny minority surrounded by a much larger, depersonalized, "dirty" society which handles all the big problems for them. Problems including: National defense, international relations, technological research and infrastructure, advanced education, manufacture/import/transport of all kinds of exotic goods and medicines, law enforcement, care of the elderly.
It's easy to say it's a better way to live, until you realize that it can only exist because it's held up by all the people paying the costs of the "worse" way.
As a thought experiment: Think of how much different our larger society could be if there was some sort of alien galactic society that handled those kinds of problems for us.