Another supporter of the light theme hereI am a minority supporter of the light theme.
I think eye fatigue is more influenced by screen flicker than brightness.
Remember the school lessons. The teacher used the dark theme of the blackboard, and the students used the light theme on the white paper of the notebook. The history of the boundary between bright and dark themes begins there. When reading and writing letters, I think it is more natural to have black letters on a bright background. However, for those who have experience typing commands, it is understandable that the combination of black background and white letters feels natural.