Its not clear at all that blue light has a significant impact on sleep or eyestrain; the science is ambigious.
The main piece of research referenced suggests that dark mode is worse in situations of low ambient light. But that was at small text sizes; of course, light text on a dark background has less contrast than dark text on a light background. That doesn't address the question of whether dark mode, used correctly, helps to alleviate eyestrain in low ambient light conditions. The suggestions offered seem to have little empirical evidence to back them up. If you feel more comfortable using dark mode at night there is little here to suggest that it would be harmful.
Its not clear at all that blue light has a significant impact on sleep or eyestrain; the science is ambigious.
The main piece of research referenced suggests that dark mode is worse in situations of low ambient light. But that was at small text sizes; of course, light text on a dark background has less contrast than dark text on a light background. That doesn't address the question of whether dark mode, used correctly, helps to alleviate eyestrain in low ambient light conditions. The suggestions offered seem to have little empirical evidence to back them up. If you feel more comfortable using dark mode at night there is little here to suggest that it would be harmful.