Sounds like "scientific pantheism" or, as Richard Dawkins would say, "sexed-up atheism."
"Scientific pantheism", as merely "sexed-up atheism", argues that the foundation of reality is the matter-and-energy realm as discoverable and measurable by the instruments of modern Western science.
But, if "Nature" is the total set of processes that make our bodily and mental existence possible (and notice that there is no limiting to the 'matter-and-energy' realm in this definition), then -- since from a theistic perspective God is part of what makes our bodily and mental existence possible -- that would mean that this definition of "Nature" would include the Christian idea of God. Obviously, religious naturalists would object to that inclusion, even though their definition strongly implies that inclusion.
From an Orthodox perspective, it would seem that one could not divorce God's Energies from this definition of "Nature". God's Essence, however, seems to be totally beyond 'the total set of processes that make our bodily and mental existence possible', and thus God's Essence would be truly "super"-Nature. Religious naturalism, from an Orthodox perspective, unwittingly accepts one aspect of God, while rejecting another aspect (if we can speak of Energy and Essence as "aspects" of God).