Not exactly because the 4% rule allows you to increase your withdrawals throughout time to track inflation. That would it be true if the treasuries. Also worth

Not exactly because the 4% rule allows you to increase your withdrawals throughout time to track inflation. That would it be true if the treasuries. Also worth noting that the 4% rule is not designed for principle preservation. So you end up with zero after 30 years. I’m contrast, your approach would preserve the principle.