https://en.wikipedia.org/wiki/Life-cycle_hypothesis?wprov=sfti1
It seems self-evident to me that nobody on Earth actually does this. Real people are short-sighted, undisciplined, and lack the computational ability to account for all the variables.
Some may attempt to, but will invariably fail, and most people don’t even try and instead live for the short-term. Richard Thaler covers this in his book “Misbehaving: The Making of Behavioral Economics”.
Has even one instance of LCH behavior ever been documented?