Phrases as «According to standard interpretations, quantum objects do not have well-defined properties, until those properties are measured by an observer.» are repeated too often in the literature but do not agree with what quantum mechanics really says.
Moreover, contrary to claims in this article, there exist chemical and physical processes that cannot be explained by quantum mechanics. Several extensions are known and used in the lab. For instance, "The Liouville Space Extension of Quantum Mechanics". T. Petrosky and I. Prigogine. Adv. Chem. Phys. 99, 1-120.
Of course that extension emphasize still more inherent randomness of nature and this is a very important point, explains how randomness survives at the classical level under certain conditions: Poincaré Resonance and the Extension of Classical Dynamics 1996: Chaos, Solitons and Fractals 7(4), 441-498
I.e. randomness is not restricted to quantum systems.
And generalizations of their theory are already at our hand. Finally, information theory has not provided any new result that were not known previously.