Why Exactly Does The Protagonist Care About Elizabeth Debicki’s Character Do Much?
Throughout Tenet The Protagonist is continually bending over backwards for Kat. He agrees to destroy the Goya simply to get nearer to her husband, fails, then manages to get to him anyway. But even after these occasions, and saving Sator’s life, he nonetheless fights for her. He rescues her through the first automotive chase, finally giving the ultimate piece of the Algorithm to Sator and risking all of humanity. It’s not like The Protagonist would not know this both, he’s later chastised by Neil, however even after that they proceed to work collectively.