Tolkien

Tolkien was an unashamedly highly devout Catholic. The movie completely misses all of this.

For example, the movie opens with the Tolkien family thrust into poverty. It skips the fact that this was because Tolkien's mother converters to Catholicism in a very anti-Catholic Britain and was ostracised by her family who would not support her at all. Many more such examples missed. Tolkien called his mother a "martyr for Catholicism" and that The Lord of the Rings was fundamentally "a Catholic story."