I have fallen into the first cohort but usually with less income for most years since having a house and kids. Income usually rises over a lifetime.
I am hopeful I will then be at a stage where I arrive at cohort 2, and am allowed to live a smaller income life with whatever I have built up which was already taxed.
After paying throughout life over and over, you also want to penalise a person who makes it to cohort 2. I would say that they should be allowed benefit from a lifetime of work- this is the notion that I was raised with, if I worked hard I would benefit.