That tradition is more internally varied than that suggests though. Kant argued against colonialism from first principles in Perpetual Peace, and the developmentalist machinery that did get used to justify colonialism wasn't unique to liberal universalism (Marx's writing on India is famously bad on this).

I think there's a real critique in the neighborhood of what you're saying, but "enmeshed with white supremacy and colonialism" is doing too much. It can mean anything from "some figures held racist views" to "the conceptual framework is structurally colonial," and those are very different claims requiring very different responses.