I never said Lewis’s books were Christian...
He was rather inclusivist too.
Then you're definitely on the fringe.
Isn't there something in Christianity about not bearing false witness? You have misrepresented Lewis's statements of Christianity. If you are going to make a proposition, you have to support it with reasons. You haven't given any.
As Lewis states in his preface to The Great Divorce:
Blake wrote the Marriage of Heaven and Hell. If I have written of their Divorce, this is not because I think myself a fit antagonist for so great a genius, not even because I feel at all sure that I know what he meant. But is some sense or other the attempt to make that marriage is perennial. The attempt is based on the belief that reality never presents us with an absolutely unavoidable 'either-or'; that, granted skill and patience and (above all) time enough, some way of embracing both alternatives can always be found; that mere development or adjustment or refinemenbt will somehow turn evil into good without our being called on for a final and total rejection of anything we should like to retain. This belief I take to be a disastrous error.The point is that not everyone gets into heaven. In this story most of his characters do not.
Then there is his sermon "The Weight of Glory" in which he states:
St. Paul promises to those who love God not, as we should expect, that they will know Him, but they will be known by Him (1 Cor. 8:3). It is a strange promise. Does not God know all things at all times? But it is dreadfully re-echoed in another passage of the New Testament. There we are warned that it may happen to anyone of us to appear at last before the face of God and hear only the appalling words, "I never knew you. Depart from Me." In some sense, as dark to the intellect as it is unendurable to the feelings, we can be both banished from the presence of Him who is present everywhere and erased from the knowledge of Him who knows all. We can be left utterly and absolutely outside--repelled, exiled, estranged, finally and unspeakably ignored. On the other hand, we can be called in, welcomed, received, acknoledged. We walk every day on the razor edge between these two incredible possibilities.I would not call either description "rather inclusivist." On the contrary, Lewis is quite explicit that any Christian may not be included at all.