The book was filled with scripture quotes and the author one of the inklings, a group that included CS Lewis and Tolkien. Enter Hollywood and Oprah and the end product has lots of clever special effects,
Creative and clever it was. It was sad that the Christian content was pretty much completely removed. While the original book was filled with scripture quotes and many literature quotes given in this version, the original intent disappeared. Her opinion on a Harry Potter book she had read was, "It's a nice story but there's nothing underneath it."
Madeline L'engle criticized Harry Potter as not having enough of a point and substance, but she might have stronger striticism of this movie. This movie misses the point of the original and passed over the Christian content more in favor of Oprah's views even writing in her hero Maya Angelo and skipping over the original Christian intent of the book
In the original, the father reminds his daughter 'All things work out for good to those who love God' but this version puts the emphasis not on God but on your inner self.
Am I wrong?
Disney's pretty religiously neutral on a good day. So I don't know why you'd be surprised they went for a religiously neutral route.
Most beloved movie adaptations change the content drastically. Especially from Disney.
Mary Poppins ticked off the author so much she actually forbade the sequel rights. There was even a dramatised movie version of the events made by Disney themselves. Although maybe she mellowed out or the copyright expired since a sequel movie is set to be released soon.
The MGM 39' Wizard of Oz took a road trip book and morphed it into a three act structure.
Willy Wonka and the Chocolate Factory also drew the ire of the author. Who similarly forbade the sequel rights.
With Harry Potter the movies were a bit hit or miss. Mostly because they started to release them when the 4th book was just being published. So the overarching threads that weren't even revealed yet had to be hastily retconned or added into the movies as the series went forward. Although the first 2 were almost verbatim, to their own detriment (even as a purist I can admit that.)
A movie has to make money. Appealing to a wide audience is a popular strategy, especially from Disney.