It is indeed impossible for any man to make any statement about any fact of experience without doing so in terms of an all-inclusive view of reality. All men presuppose, whatever the name they use for it, a synoptic view of reality as a whole. It is always, at the same time, about the nature of facts. And back of the argument about the nature of facts, there is the argument about the nature of man. The worldviews may not have been explicitly explained or acknowledged in the dispute, but they determine the course of the argument.
All men do their thinking on the basis of a position accepted by faith.
If your faith is not one which has God in Christ speaking infallibly in Scripture for its object, then your faith is in man as autonomous. Theism that is worthy of the name is Christian theism. Christ said that no man can come to the Father but by him. No one can become a theist unless he becomes a Christian. As we say, it is a package deal.