Those are all quite different from North America, in all cases, the indigenous people are still around and are going to be indefinitely. The Native American tribes are tiny, vastly outnumbered, and shrinking over time.
The blog post that so outraged you argued that colonial administration was better than the post-colonial regime, so I'm not sure if you're engaging with that and missing, or just raging.
And even putting the genocides aside, look at South Africa under the Afrikaaners. Explain to me how this was a good thing for the colonized?