I am not disputing what you say.
My point is that just because someone does something unorthodox or not by the book does not mean it is wrong.
What works for me is what I go with.
My results hand gun Sig p226 combat pistol course 1 eye shooting always upper 90%
two eyes open mid to low 80%
Some of the best baseball pitchers of all time used some of the poorest mechanics but they were successful.
Ichiro hits for the highest average every year but do you think little league coaches are teaching kids to swing like him.