Perhaps, but it was in common usage in 2000 as demonstrated from this quote in the Economist in 2001. Yes, they use the exact phrase, “Fuck-you money” to mean ~

Perhaps, but it was in common usage in 2000 as demonstrated from this quote in the Economist in 2001. Yes, they use the exact phrase, “Fuck-you money” to mean ~$10M or enough to throw off several hundred $K a year in cash. https://webcache.googleusercontent.com/search?q=cache:05CbACaDYn0J:https://www.economist.com/special-report/2001/06/16/the-new-wealth-of-nations+&cd=3&hl=en&ct=clnk&gl=us https://webcache.googleusercontent.com/search?q=cache:05CbAC... To be clear, the fine article does bring up the phrase as quite old, and I like his idea of FU-Frugality since you don't actually need to have that much money (or madskilz) to be able to Say No to dumb stuff.