USA, Canada, Australia, New Zealand, and similar nations are settler-colonial nations where the indigenous people have been genocided to the point where settlers vastly outnumber them. How is decolonization going to work in this situation?
Bonus: How is a post-revolution Japan going to reconcile with the Ainu and Ryukyu people?
They won’t be until the illegitimate states balkanize on their own. Collapse, essentially. It’d be easier to walk a camel through the eye of a needle than to coax the settler naturally out of white supremacy; and the western left is neither large enough, nor organized enough, nor serious enough.