Heterogenes = Outsiders?

[Subotan]

Influenced by his own charisma and relationship with his father (if he is an outsider), in general Heterogenes have 35-95% chance of being outsiders. Racism and contempt for the different are not new concepts. Of course, if you are bothered by having so many outsiders in positions of power, you as a player have the ability to reinforce this segregation and distrust of the different by denying outsiders these positions.

Awesome way of putting that. Can generals lose their outsiderness?
Edit: Apparently my Firefox spell checker recognises "Outsiderness" as a word, even though I've never heard it before.