Genuinely WHY is Annerose's tragedy considered "controversial"? *Incoming analysis*
She's at it's LEAST a tragic and morally grey character, not even close to being a monster. The only time she was able to make a choice of her own, without having to worry about having her and her loved ones killed, was the moment people decided that she's a cruel antagonist-like character in Reinhard's life, which is insane compared to his decision of killing ~2 million people just for political gain which somehow isn't as big as a deal as Annerose's decision to live outside of his life.
And yes, she does care about Reinhard, but she won't sacrifice every strand of her soul just to see him kill innocent people, she has every right to blame Reinhard for something he fully consented to do (novel + DNT). To love someone is to understand and respect them for who they are and who they want to be to you, not by what they do. She understands that Reinhard loves her and she loves and respects him in every way possible, she sacrificed what little she had for him. Her childhood was sacrificed to be a mother figure and she let him go because she believed it was best for him (she's human ofc she can't tell what's going to happen from then on), and the least she can do to so he won't be killed. She was the definition of a mother to him, but she doesn't support his desire to take control, even if it was for her. Perhaps she also considered the tragedy of Westerland alongside Kircheis's death as a reason to distance herself from him as a way to slow his pace down, the most she thought she could do to avoid becoming a glorious pawn in royalty since she was so low in power.
Also, calling her a whore for being forced upon an old man with the highest power is simply a dehumanizing, dogshit attitude.