Doc is disturbed.
I theorize that the Doc is not gonna be okay with this. Because he himself embodies the paradox - the intersection of two worlds: radical and mundane. He was born with radicalness of a ninja, but he chose to be a normal doctor. He could kill mummies, but he chose to treat diabeeetees. So this is basically the same existential conflict around which the entire comic is based - the conflict of being both a ninja and a doctor - but now that conflict has been made manifest.
I have to say though - the radical realm, for all its supposed lack of racism, seems kind of ... fascist. Or maybe, more correctly, chauvinist. Because if you're not radical, you can't become radical - you're born radical or else you're not. It's a hierarchy of birth and creation and if you're a guy like Derek, you don't belong. You don't belong in King Radical's entire universe - you need to be wiped from the face of existence.
So it's not racist, in that they don't discriminate based on racial heritage. Rather, they discriminate based on a vague inner quality that is part of your very essence and cannot be manufactured and is determined by the judgment of a King who holds literally absolute power over whether or not you are sufficiently radical to exist in the same state of being as himself.
I don't like this plan.