I think they took the land, just like everyone else has been taking land for all of human history, and applying modern government concepts to something that happened a few hundred years ago is stupid.

We can try to prevent future injustices, we can fix wrongs that occurred in the lifetimes of people who are alive (like reparations for residential schools) but trying to go back and change things for anything done prior to anyone alive existing is stupid.

So the cutoff is “is anyone still alive that it directly happened to” and descendents do not count.