Mine is genetic.
I have very similiar values than my mother.
So i'mnot sure if / how your theory is correct or not.
Also there are a lot of normal people in the world who live outside and also don't have perfect eye sight at all. This goes back a long time.
Can you also elaborate on your 2 diopter difference between red and blue light? For one i find that number very very big but i'm very good in seeing full color without any chromatic aberration.
The effect of your theory would need to be less relevant than other factors.