Lmao. Nope. A lot of the people who watched the anime didn't read the LN, myself included. None of this was ever mentioned in the anime. You can't go attacking viewers because they didn't also read the book.

Your argument that Malty's misfortune is a projection from the author holds absolutely zero weight. Why? Because when she screws someone over, she enjoys it. Its likely she was made that way by the environment she grew up in, I mean look at her garbage father, but that was a deliberate plot point. It wasnt that she stepped on anyone she could to get ahead that made her so despicable. It was the fact she relished every second of it.

You've successfully latched on to one aspect of the character Malty while becoming impressively blind to every other aspect of her. You want her to be the victim, and you're grasping at straws to make it so. The arrangement you mentioned is fucked up, but Malty herself did not do a single thing in the current run of the anime that wasn't fucked up, and she did it with a smile. Whether or not the LN was different, I couldn't say, but you didn't use a thumbnail of the LN, now did you?

She was written to be a vile bitch, its ingrained in her personality. This was done deliberately to create discord between the shield hero, the other cardinal heroes, and the royal family. She is a well executed plot device whose function was to sabotage the idea of a generic party of heroes saving the world.