Everything that has been construed as the "Christian" angle... sacrifice and resurrection, corruption by sin (greed, etc.), the foiling of evil, the triumph of good, has been the mainstay of nearly every work of fiction, including ancient theatrical performances (especially in East Asia) for millennium. If people wish to pluck out pieces to create allegories that fit their personal ideology, it's not too difficult to do so. As a novelist, I learned that there are only seven basic plots in existence, and all works of fiction draw from one or more of these plots in constructing their stories.
Holy ****, did you not read the quote I provided from lewis himself? The guy was always open about the explicit christian themes of HIS work, which surely holds more validity than some chowder head on the internet
Again, from lewis: "You are mistaken when you think that everything in the books 'represents' something in this world. Things do that in The Pilgrim's Progress [a 1678 allegory by John Bunyan] but I'm not writing in that way. I did not say to myself 'Let us represent Jesus as He really is in our world by a Lion in Narnia': I said, 'Let us suppose that there were a land like Narnia and that the Son of God, as he became a Man in our world, became a Lion there, and then imagine what would happen.'
C.S. Lewis, quoted in Walter Hooper, C. S. Lewis: A Companion and Guide"
the accompanying piece from the BBC: "Each of the Chronicles focuses on a different part of the Christian story and theology. The Lion, the Witch and the Wardrobe draws on themes of sacrifice and resurrection. In The Magician's Nephew, the first book in chronological order, Narnia is sung into being by Aslan but corrupted by original sin. The Last Battle is an apocalyptic culmination. Other books feature pilgrimages, "the restoration of the true religion after a corruption" and the foiling of many evil schemes.
In The Lion, the Witch and the Wardrobe, along with Aslan as Christ figure, one character fulfils a Judas role by being tempted to betray the others, while the White Witch herself plays the role of the tempter. The role of Father Christmas has been compared to the Holy Spirit, as has Aslan's magical breath. The name of the oldest child may even have been a reference to Saint Peter."
I honestly am amazed that someone would even try to debate this, while adopting a position of authority. Being that it's so widely recognized