A counterfactual supposition (farḍ muḥāl) introduces an impossible case provisionally to investigate its implications. Considering it does not make it genuinely possible.
Someone may hypothetically posit “a world without a creator” and then demonstrate that this is untenable. The initial supposition did not establish that such a world really can exist.
Likewise, treating a divine attribute as an independent topic of thought does not prove separate existence. Yet this principle cannot be used to erase all real distinctions in meaning; each claim must be assessed on its own terms.