“If your faith is so weak that a mere movie can threaten it... you’ve got other issues.”
The same can not be said for impressionable children.
It's what a responsible parent would do...
If I may spam some verses from a random internet google that I did on the subject of Christian entertainment:
Let us purify ourselves from everything that contaminates body and spirit (2 Corinthians 7:1).
James 1:27 Religion that God our Father accepts as pure and faultless is this: to look after orphans and widows in their distress and to keep oneself from being polluted by the world.
Do not conform any longer to the pattern of this world, but be transformed by the renewing of your mind. Then you will be able to test and approve what God’s will is-—his good, pleasing and perfect will (Romans 12:2).
Therefore come out from them and be separate, says the Lord. Touch no unclean thing, and I will receive you (2 Corinthians 6:17).
Their destiny is destruction, their god is their stomach, and their glory is in their shame. Their mind is on earthly things. But our citizenship is in heaven. And we eagerly await a Savior from there, the Lord Jesus Christ (Philippians 3:19-20).
Dear friends, I urge you, as aliens and strangers in the world, to abstain from sinful desires, which war against your soul (1 Peter 2:11).
The world and its desires pass away, but the man who does the will of God lives forever (1 John 2:17).
“The same can not be said for impressionable children.”
Then you would also agree that children should not be exposed to any religious belief system, right ? If they are too impressionable to rationally evaluate the ideas in a film, then they should have been kept away from Narnia and other pro-Christian kid’s movies.