It goes up - quite a lot - if you take promotions.

But, back in the day FIRE used to mean something beyond just being rich - there was an anti-consumerist bent (and expectation that you'd move away from your expensive city/former job) that usually went along with lower spending.

Not if you're selling your house in "muh good school district" to the next sucker and retiring to <shuffles cards> Idaho.

But then you have to live in Idaho.