Yes, windows10 night light is better than blue light. Although all types of lights increase strain on your eyes, it is always advisable to limit screen time, especially before sleep. There is a simple science called circadian rhythm, which controls our sleep and wake cycle. One of the main reasons for sleeplessness after work is exposure to blue light emitting from our devices. It disturbs our circadian rhythm by blocking a hormone called melatonin. I will not go in deep and leave it to you to search online about this topic.