Never once did I say green light has no effect. I was giving valid responses. And your telling me that the facts are wrong.
I have ran a green light through dark period. Plants went into bloom, they grew and I harvested them. No issues with having the green light on. Just needs to be the correct bulb. Actually green light not just coated.
Grower talent is hard to come by. I see a lot of misinformation on here.
What you implied was that because plants are green that light is reflected and therefore not used or seen by the plant.
There are LED companies who have been in the plant lighting game since the beginning who use a fairly high ratio of green in their spectrum, they do so on the back of NASA research.
There are plenty of non dumbed down articles on green light and how its used for photosynthesis , although at a lesser degree then other parts of the spectrum.
There are also lots of articles about other uses like shade avoidance but the degree of stretch greatly depends on the presence or lack of other parts of the spectrum.
Plants have been grown in past studies using only green, only red and only blue. They grow just less efficiently.
You may well have grown with a green light in the background and ad no issue. Doesn't mean the next 50 strains you grow will go the same way.
Its just using best practice to minimise risk to not have constant light of any kind in the dark period.