I disagree that the concept of settler colonialism only applies to the United States. Settler colonialism is a form of colonialism where the colonizers seek to replace the original population of the territory they colonize with a new society of settlers. This process involves the dispossession and elimination of the indigenous population, and the imposition of the colonizers' culture, values, and institutions on the land.
Settler colonialism has been a pervasive phenomenon throughout history and has occurred in various regions of the world, including Australia, Canada, New Zealand, South Africa, and Latin America, among others. In all these cases, settler colonialism has resulted in the displacement, marginalization, and often genocide of indigenous peoples, as well as the imposition of settler culture and institutions on the land.
Therefore, it is incorrect to suggest that the concept of settler colonialism applies only to the United States. The US is one example of settler colonialism, but the phenomenon is not limited to its history and geography.