Pekka Hemalainan is pretty much the only historian who studies native tribes during the European colonization. His recent book talks about how the tribes didn't view Europeans as much of a challenge or difficulty. The loss of land came from their own arrogance than anything to do with the idea of European dominance.
Basically, European colonies survived by going to places the other tribes didn't consider important. Another tribe had died off, and the Europeans settled in that land? Sure go ahead.
This follows similar ideas in business tech called Disruption. Nintendo has specifically tried to emulate the ideas from books based on those studies. They let Sony and Microsoft battle for the same players, and then offer it to everyone else, with a few games those other players might enjoy as well.
I bring this up because the same ideas are being used to promote the 'great replacement'. The POC are not that important, but they should be given all this power because they aren't a threat.
It's not so much disruption as there was no such thing as "private property" for native tribes, since these tribes were nomads.
Civilizations are not universal. For the british empire, northern America was just yet another avenue for "growth". After all, Adam Smith the father of capitalism, was british.
"the great replacement" is going to happen because white westerners are massively cucks, simps and idiots who spend their time trying to pander to eunuchs all the time for god knows what reason...
Civilizations come and go, the LGBT civilization obviously isn't going to reproduce itself since gay sex can't produce babies, and white women who massively vote progressive want abortions as they see babies as a liability.