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.
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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.