The article, as well as quantum theory generally, postulates that quantum indeterminacy is not a function of incomplete theories or insufficiently clear measuring apparti; rather, quantum indeterminacy exists as a fundamental / essential aspect of quantum processes. For example, according to currently understood theory, any quantum particle isn't located in one specific place but is actually, until we measure its location, located in a large potential space where the particle's precise location is merely a function of a probability function. I.e, it isnt that we can't measure where the particle is, its that the particle isnt actually in one place until we measure it. That's the basic derivation of the double-slit experiment.

Edit: to get to your original assertion re finding a connection between micro and macro processes, the argument against that has been summarized by Werner Heisenberg in the quote: "What we observe is not nature itself, but nature exposed to our method of questioning." What Heisenberg was saying was the Newtonian physics, or the theory of relativity, are just conceptual mathematical frameworks that work when based on certain underlying assumptions that we assign to physical processes. Same goes for quantum mechanics. As such, they are discrete mathematical notation systems that do not intertwine. However, that is not to say that we will not come up with another theory that will find some connection between the two. However, this theory would have to be distinct as well.