He does not want to be treated as a new Banri. He does not know which Banri is real. He doesn't even know who the old Banri was. He is confused, and rightfully so. Treating him without prejudice relating to his loss self is different from pretending that valuable memories did not even exist, or blatantly pretending to be a different person who is unacquainted with his old self.

Linda did not even consider Banri's feelings. She clearly said so herself. She felt that Banri was a bomb that would explode if she touched him. It was not about Banri, but Linda's feelings.

Imagine knowing someone is faking every single action related to you. How would you feel about that person?