I am referring you to the usual definitions of God.
It is silly, to say the least, for humans to try to test those definitions.
You mean foolish, folly, fallacy and a few more f-words ....like frivolous!
Nevertheless, it's (1) a leading question, i.e., containing an unfounded premise in the question. Other fallacies implicit in the "usual definition" of the OP:
(2) God = He: the anthropomorphic fallacy
(3) God = controller of the Universe: the science denialism extension to (2)
(4) bias to alternatives (2) and (3), omitting the null hypothesis: God = idea =0.
Fallacy to the power four.
Even under the bias correction to (4), alternatives (2) and (3) are tested, failed, and sent to the error heap. So falls the alternative hypothesis that props up (1), and all of this conversation collapses to the null position: God is an idea.