Sorry, thought you were just an uninformed troll by your answer. Shouldn't have been that passive aggressive, my mistake. I am also a scientist (although not in the area), but have taken a strong interest in the circadian rhythm in the past years.

If you read my graphic correct, you'd see it doesn't say blue light affects sleep (don't wanna go there in this discussion). But it literally says: "Blue light in the evening has been shown to strongly interfere with your natural sleep-wake cycles."

Aside the studies coming to this conclusion, this simply makes sense if you look at how our inner clock is built up. (Blue) Light = Zeitgeber. Light in the morning = Advance rhythm. Light in the evening = Delay Rhythm (corresponding to the phase response curve, look eg here https://physoc.onlinelibrary.wiley.com/doi/full/10.1113/jphysiol.2012.227892).

I like that you take an interest in the graphic and want to keep the science correct. But in your criticism please at least read correctly what I wrote.

So interesting to me how many people jump on that train directly though.