I don’t know if anyone has come across the new concept. But it is fashionable to call any white person a “colonist”. In entertainment I have come across it a few times. It in itself is another form of racism implying that even a 3 year old white girl is considered a colonist .. I guess because she is ...white...so has to carry blame for a bunch of people with her skin color did 100 years ago.
White people in North America were never colonists, but conquerors and settlers. Their nth generation descendants are indigenous by any reasonable definition.