Alleged “God of the Gaps” arguments are normally meant as modus tollens arguments (i.e. of the valid form, 1. If p then q. 2. Not q. 3. Therefore not p.)1
Consider 3 reason to agree:
This is relevant because appeals to God as an explanation which take the form of modus tollens by definition do not commit the so-called appeal to ignorance fallacy.
• Simon Blackburn: “it constrains the interpreter to maximize the truth or rationality in the subject's sayings.” [The Oxford Dictionary of Philosophy (Seven Stories Press, 2007, 78.]
Theists often conclude that God explains x using canonical argument forms (deductive, inductive, abductive). This is relevant because the literal “argument from ignorance” is not among these argument forms.