Liberals, especially Obama, want white to be subservient beasts to progressives and blacks. Obama is motivated by a visceral contempt for all things white and American.
You’re right; they don’t want whites to disappear (which is happening anyway) - they want them to provide for every need of “preferred minorities”.
It isn’t happening; most whites are quite content to simply leave this world without bestowing another generation of “makers” for the “takers” that are inheriting the Earth.