I mean, perhaps the article chooses a bad example but there are plenty of other examples that are decidedly non-western. Such as the Vietnamese settlement of the the Mekong delta and the displacement of numerous other groups that lived there. Or the Japanese displacement of Ainu people (pre western influence). Hell The Bantu peoples migrating out of what is today Cameroon to settle huge swaths of sub-saharan Africa (not well understood but there is abundant evidence that this migration was sudden, dramatic and highly disruptive, and we know that huge amounts of native groups in many areas were ether displaced or eliminated.)

And so so so many more.