Yes, I agree that there are a lot of doping scandals with African (at the moment Kenya only, because Ethiopia is not yet under the same lens).
However, the most part of REAL doping scandals are with athletes very weak, and the strong athletes are exceptions.
Instead, it's true there is a lot of corruption, since many officials look at their position not because have passion for their sport, but because can have economical advantages or, like in the case of Olympics, the possibility to travel for free going abroad, living the REAL coaches at home.
I don't know if the Team Manager of Athletics, Rotich, really asked bribes to UK officials for informing them of OOC controls one day before the test : may be yes, maybe not. What I know, is that this Rotich doesn't have any real impact on Kenyan athletics, and there was no reason for putting him as Team Manager. In the past, we had officials who never knew anything about the procedures in big championships, didn't know anything about athletics, and didn't know Kenyan athletes.
During World Half Marathon Championships 2005 in Edmonton, the Kenyan official, after going around the dining room for one hour for meeting Kenyan athletes, came to me asking "Can you introduce me to my athletes ?", since he arrived alone, and didn't know any Kenyan runner.
In Rio, somebody organized the flight for the coach of Julius Yego, who is the World Champion of Javelin, in the way he can arrive in Rio the night before the qualification, and the next day (day of the final) has to go back Kenya, probably because there is some official of the Olympic Committee who has to stay in Rio for all the duration of the Games, never going to see any competition.
I know all these situations, and for that reason, also if I'm the first saying there are doping problems in Kenya, I say the general idea of western people about the Kenyan situation is totally wrong, when we speak about the best athletes.
There is a reason because some of the best athletes of the past continue to ask to change the rules of AK for giving in the Federation more space for who really works every day with the athletes, and for athletics.
But all this bad organization doesn't mean Kenyan athletes are doped. Look at the case of John Anzrah : it's common for every Team to try to help coaches who are not in the official olympic team, but are outside the village at their charge, so I'm not surprised at all that Ferguson Rotich (and Anzrah is not his coach) gave him his accreditation inside the village, used for going inside the dining area for eating. The first problem is that the volunteers controlling the entries didn't control the picture of the accreditation, since it's not possible to think Anzrah (61y) can be similar to Ferguson (23y).
The second problem is again with the volunteers of Antidoping : while doctors of antidoping are in their area waiting for the athletes, there are volunteers who have to go around (may be in the buildings of every team, or in the dining area) for collecting the athletes who must go to the doping control. When we are in Olympics, or in WCh, the window of whereabouts doesn't work anymore, and the official of antidoping can arrive in any moment. Also, ALL the athletes who can have good results, or belong to Countries under the eye of WADA, are tested. So, this means Anzrah was confused and silly trying to save himself, but this has nothing to do with Ferguson Rotich, who almost doesn't know who Anzrah his.
The most part of problems are out of ignorance, or for corruption.
What there is in common among top athletes and "good athletes", who are the one caught for doping ? Almost nothing : top athletes have good managements, that explain what they have to do, and what they have not to do. Coaches of top managements clearly explain the athletes NOT to take any medicine without showing the doctor prescription to the official doctor of AK, or to their coach (if the coach is in touch with the european or american management). The management itself takes care of their whereabouts (really somebody can suppose Kenyan athletes can work every day with their computer for preparing the personal ADAMS ?), and only if the athlete is superficial (what happens in several cases) and move without informing the management can have a missed test.
But what about athletes for 2:07-2:08 in Marathon, or equivalent in other distances ? They are not part of organized managements, and need to look at all these particulars alone. Do you think an athlete for 2:08 can have a professional mentality, if Kenyan ? He is a VERY NORMAL PERSON, when is sick goes to the doctor or the pharmacist of his village asking for some medicine, sometimes goes to a "traditional doctor" giving him some "traditional" herb (and nobody knows the composition), when from his house somebody calls because there is some problem he goes home, and of sure he doesn't inform anybody of his movings.
At the end of everything, maybe he's positive for something, without knowing when and what he took. The only solution is to continue to INCREASE THE EDUCATION of the athletes, and in this case one important step is to explain that the most common medicine for blood, like EPO, don't have any effect on their performance, if they are in tough and smart training.
So, here there are a lot of people thinking the organization of the life in Kenya is the same of US or UK, in both the directions (good or bad situations), but till when you don't start from their REAL starting point, never can have the real idea of what there is in the mind of African, and which possibility they have for doping in sophisticated way.