I wouldn't call farming humans for food exactly civilized.
'Civilized' in this context does not mean 'moral'. The traditional root of the word 'civilized' is 'city dweller'. It implies large-scale social organization, complexity, sophistication, but by no means necessarily morality. The gladiatorial games in ancient Rome were quite 'civilized' entertainments, for all being organized mass torture and murder. When they enter decadent phases, civilizations often become very morally corrupt.
The White Court is
all about decadence. The White Court nobles tend to have expensive, sophisticated tastes. They like fine wines, delicate foods, vintage cars, expensive clothes, silk and satin and fine carved furniture and woven rugs that cost more than a working-class family lives on in a year.
In
Turn Coat, Binder points this out.
In a post-apocalyptic world, a lot of the luxuries the White Court so like simply could not exist. Yeah, they could have their little protected enclaves, but a lot of the delicious, luxurious products that they so love absolutely require a sophisticated world-wide economy and tech base to produce and maintain.
Such little protected islands would have no silver wraith cars, no super-expensive foods flown in from around the world, there'd be no movies and TV shows and so forth.
Every box of fine chocolates Lara indulges in implies cocoa farms, harvesting personnel, transportation to get the harvest to the factory, a factory to process it, a chocolatier to take the processed chocolate and make the expensive little tidbits out of it, more distribution systems to get that $1000.00 box of chocolates to Lara's bedroom. Which implies gasoline and jet fuel and communications, which imply refineries and oil wells and TV/radio equipment or at least telegraphs or systems of messengers, etc.
Magic can get around some of this, but not nearly all.
Life even in the nobles' protected fortresses would be a lot less delicious and rich and exotic than the nobles have now.
Yeah, the White Court loves civilization. Doesn't make them any the less predators who feed on people.