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There is a difference between saying "models that talk about a balance of nature are useful" (the usefulness depending on what you're trying to do) and "there really is a balance of nature, get used to it."
This article could really have benefited from a definition of "the balance of nature," before trying to decide if such a thing existed or not. Anyone who writes "life thrives in a balance between natural imbalance and balance" is obviously using multiple definitions of the word at the same time. That's good for metaphors and poems. Hard science requires something more specific.