Here was their setup/example:

“We can all name a bunch of movies that take very little from their source material (I Am LegendWorld War Z, etc.) and end up being bad movies.

“What are some examples of movies that strayed a long way from their source material but ended up being great films in their own right?

“The example that comes to my mind is Starship Troopers. I remember, shortly after it came out, people I know complaining that it was miles away from the book, but it’s one of my absolute favorite films from when I was younger. To be honest, I think these people were possibly just showing off the fact that they knew it was based on a book!”

—u/mesonofgib

Source: https://www.buzzfeed.com/crystalro/movies-better-than-the-books