While the threshold for competence has been pushed high up the scale, the age requirement has been pushed down in the opposite direction. Let me explain this using a simple contextual example that we can all relate with.
You see, previously when we still had the powerful Provincial Commissioners heading the local administration, the title Chief Principal was a preserve of old men and women only one breath away from retirement. These oldies, who used specs to support their waning sight competence, only served in these roles for a few years before they retired to the farms.