Stating and adhereing to the principle that "God is beyond the purview of science" is not "having nothing to do with a god." It is saying something definite and particular about God and where he does not belong.
"It is saying something definite and particular about God and where he does not belong."
No, it is saying EXACTLY the opposite. It is saying NOTHING about the existence of God.
That is a nutty statement. Saying that "God is beyond the purview of science" is nothing more than the recognition of the limitations of science.
The statement accepts, as provisionally true for the sake of argument, the characteristics which you ascribe to the entity you purport to worship, and recognizes that science is not equipped to say anything about such an entity, based on your very own description of its characteristics.
It is saying nothing about God, but saying something definite and particular about science.