A lot of people will overlook this dudes post put there is a ton of info/wisdom hidden in those words.
Even assuming some Africans are doping and winning, there is such a depth of talent that all things being even (everyone doping or everyone clean) they would still be the best in the world. IF Kitum showded us anything, its that access to information and coaching is pretty much universal now, esp in a place like Iten where everyone knows someone with a good coach. Just mimic their workouts and tailor it to your needs.
IF Americans throw up their hands each time a Kenyan runs a fast time, they have lost before they step on the start line.
The question you are all avoiding is why are US runners not running fast, they have the best of everything and are under raced.
Dont blame others for their fast time. If you have zero proof of doping, its just silly to scream about it ala Armstronglivs