It doesn’t presuppose that. It asks you a question about how you would answer it.
How God would answer it is obvious (and isn’t going to change) because we are (living in) the answer.
And the question is about a hypothetical “before” anything “actuates”. (One could say there is some absurdity there if one did not understand omnitranstemporality.)
Changing God’s nature would not be powerful.
The absurdity understandably lies in your own misunderstanding.
See also: Ecmandu: the POE & 3 Transcendentals