Doesn't this depend heavily on inflation? With the ballooning US debt, how do people imagine the government will continue to pay interest without massive inflation in a few decades?
The 4% rule accounts for inflation. The stock market on an average gives you 7% a year in returns adjusted for inflation. The 4% gives you enough cushion in case of economic turmoil.
"Accounts" wrongly, though? 4% inflation for the next half-century seems like complete fantasy. How do you imagine it possibly being sufficient to address the ballooning debt?