[Centrists] don’t tend to start from a perspective that arises from their empathy and curiosity for the world and build their politics based on that, they look at the spread of opinions people have around them and just go right down the middle where they can disappear into the crowd without having to do the hard work of creating an actually ideologically rigorous belief system that adheres to reality and evolves with it.

This is essentially a false generalization, or, more generally, just conjecture, unless you have proof that it is the case that that is what centrists do (arguably, it's virtually impossible for that to be the case).

What makes most centrists so cowardly is that they take both of those viewpoints as reasonable starting positions and average them to emphatically supporting “some genocide!” and it is incredibly pathetic.

I don't really understand your point here. Are you claiming that a centrist supports some amount of genocide?