That has been my experience too. Using an app like Flux https://justgetflux.com/ https://justgetflux.com/ to change the "warmth" of the colours on the display d

That has been my experience too. Using an app like Flux https://justgetflux.com/ https://justgetflux.com/ to change the "warmth" of the colours on the display definitely has a soothing effect on the eyes, and reduces strain on it. But I too don't believe it disrupts my sleep in any manner. What does disrupt my sleep is when I am doing something interesting in the computer or phone, and my brain tries to fight off the sleep - I think addiction to social media, games etc. are a better explanation to why people are losing sleep to computers and phones than the "blue light effect".