An adaptation completely botches the original theme and message

[u/Morr4Seiya]

Mulan(2020)-They give Mulan superpowers which is not only lame it goes against the message of the original about equality and struggle,plus they removes Shang because apparently having Mulan date her superior was "problematic" even though Shang genuienely respected Mulan and their rank was never brought up

I am Legend(2007)-You know why the story is called "I am legend"? SPOILER ALERT the protagonist is the actual monster,humanity is gone and the vampires have a actual society and the protagonist kills and terrorize them

Animal Farm(2026)-On the very slim chance that Andy Serkis ever sees this,here's the thing Andy,Animal Farm was not a children work it was not supposed to have a happy ending,you never heard of cautionary tales before?

[u/Detective-27]

The Lorax (2012) returns to Thneedville after just one Trufulla seed is planted and congratulates the Onceler for doing good. In the original story, the seed is given to Ted with the warning "Unless someone like you cares a whole awful lot, Nothing is going to get better. It's not." 

[u/Why-Notes5978 → u/Detective-27]

The better example is giving the Onceler a face and backstory rather than that, because the movie actually has the Onceler ponder about that lesson and thankfully pass it to the right person....which is kind of iffy a bit but ehh.

[u/Detective-27 → u/Why-Notes5978]

I didn't even mind the Once-ler having a face as long as he was properly written. Adaptations make changes and having the protagonist be faceless for a whole feature length film might not translate well. However, downplaying his unchecked greed & ambition by including his greedy family as a driving motivation lessens the impact of his character. Also, having him be a 2010s pretty boy hipster didn't help. Remember the Once-ler Secrets Tumblr blog and the Once-ler Fandom ?

[u/Egathentale → u/Why-Notes5978]

Honestly, the biggest misstep I think was cutting Biggering and replacing it with How Bad Can I Be. Those two songs are the microcosm of the Onceler's missed character arc.