Because that wealth isn't useful to individuals who are far away from accessing it, and that access / wealth can still change as they approach the age of access

Because that wealth isn't useful to individuals who are far away from accessing it, and that access / wealth can still change as they approach the age of access. Additionally, the idea of "start low end high" is being questioned by many individuals who would rather have a more flat curve while starting higher initially. GP even mentioned the reason in their post.