If you redrew The Lion King frame by frame from memory, it would still be copyright infringement if you redistributed it to your friends. The difference is how similar your recreation is to the original, not whether it was done by a human or by a machine.
Funnily enough, The Lion King is a property that has its own controversy of plagiarism of a different animation, Kimba The White Lion. But, I guess if Disney does it it's okay...
If you drew it shittily from memory it would still be copyright infringement. As would retelling it. Discoverability of the infringement and the irrelevance of the violation is the reason you don’t get sued
