This is not exactly what we are talking about. Yes artificial blue light disrupt our natural sleep rhythm. Yes there is research that shows this fact. But, that does not mean that we are not effected by the sun.

This research would need to show that blinds and artificial blue light would be sufficient to replace natural sunlight for setting the sleep rhythm to a healthy level. The existence of flux actually suggests the opposite is true, and people need software to prevent artificial blue light from disrupting the sleep rhythm.