Postliberal leftism is progressivism that has de-fused from and rejected left-liberalism. It opposes left-liberalism and postliberal rightism as more or less the same thing: institutionalized social injustice.
Postliberal rightism is cultural conservatism that has de-fused from and rejected libertarianism. It opposes libertarianism and postliberal leftism as more or less the same thing: global capitalism that sold out traditional Western culture.
Liberals — both the left-liberal and libertarian refugees of the postliberal de-fusions — should view postliberal leftism and postliberal rightism as two halves of the same thing: illiberalism.
Whatever difference we left-liberals and libertarians had, it pales in comparison with the differences we now have with our former allies.
Perhaps we can call ourselves ambiliberals.
Last time the entire world got wise to liberalism and decided to replace it with something better we didn’t much like the results. Maybe it will go better this time.