You're the one who brought technological innovation into it; if you aren't willing to argue it, don't bring it up.
Furthermore you missed the entire point of the quote I posted. The fact of the matter is that what was done to the natives in America was just another in a long trend of conquests and exterminations throughout human history, and thus guilt over it is a futile gesture; all that can or rather should be done is some degree of restitution and also acknowledgement to try and prevent events of that nature from occurring in future.