The people who say "Casca is not a character she's fridged for the sake of the plot" never engage with the VOLUME OF CHAPTERS of HER mindscape nor any of her character after her awakening. Casca experienced shell shock, which is more common in men. They become non verbal and child like and it last for years. The recovery process is gradual. Some people never recover. Casca is NOT that case. And its irritating when we have seen this covered in the manga but she's being stripped of her humanity and only described as tropes to delegitimize her character, her very human traits and personality.
Casca is no longer mentally regressed but still has lingering PTSD, but why wouldn't she? So does Guts and no one says his character is destroyed or ruined. After going to Hell and getting betrayed by the guy she risked her life to save, the scale of damage that does to a person mental health can not be over looked. HER ENTIRE GRASP ON REALITY SHATTERED.
Then fandom is reducing her to her regression in a dismissive manner while not interacting with her uprising arc. Casca contributed far too much as the hawks commander, tactically planing Griffith's rescue too then say "she's not a character" only based on the trauma she received after the eclipse.
How often do we see Ricket and all of his point of view? Or Erika? Why don't we see every reaction of theirs? Or Struggle? Why are they characters and Casca isn't? Why is Casca stripped of her character, but everyone else in the story maintains theirs? How is it possible for Casca to rationalize her current life for SEVERAL chapters just to be called a pl*t dev*ce. Yet every other character is spared from this.
The fandom is obviously overlooking Casca's development but blaming the writing they themselves ignored. "Where is Casca's point of view?" we have OVER A FULL VOLUME of just her perspective and we are still getting more. She's been back since 2018 and we have seen into her mind and emotions, 7 years have passed and we are still hearing "where's her perspective???? What about Casca's perspective???" After ALL this time is not because you want to see it but you just don't care.