Why is this at all surprising? In any status-conscious society (read: any human society), given enough time, the people who make it to the top will invariably maximize opportunity afforded to their affinity group (i.e. offspring) at the expense of everyone else. This process manifests itself regardless of the role merit plays in the sorting algorithm. If the rules are relatively meritocratic (and relatively stable),…
That is not a goal of having eunuchs around. Eunuchs usually don't have children, but they pretty much always have family members.