I am not a Magness supporter in the slightest for the simple reason he attempted to take away the champ's title on a TKO. When you have a beef with Superman, you don't pull on his cape, you need kryptonite, if you don't have any kryptonite, you best leave Superman alone.
With that said, I have to agree with Magness on the Ayana situation. Point blank, Ayana dominated the strongest 10k field in history and made it look too easy. Also, Ayana is like Genzebe, in Ethiopia her victories are barely celebrated and the other Ethiopian athletes seem to keep their distance from her. Ethiopians know there is something toxic about Genzebe and Ayana.
Your reading of the tea leaves regarding her relationship with the other Ethiopians is absurd. It's like one of those Sherlock Holmes stories where someone with "peculiar square-toed boots" must have done the deed. If she is shunned by her compatriots, and I assert we can't really know this from our vantage point, it could just as well be for other reasons. Perhaps she is not personable? Perhaps she made statements against the political elite and others are not so courageous about political matters? Perhaps she has Eritrean relatives? Perhaps she said something against the Coptic religious hierarchy? We do not know and it's frankly mean-spirited and unhelpful to speculate. The anti-doping effort needs testing by officials who are above and beyond reproach--not here-say.