That story is just what they said a few months/year or so ago but more of it. And it's not anything people don't already know. EPO is old school, of course there will be people using it in less controlled areas. It also smells of IAAF politics, the way it seems to be pointing the finger at the Russians and away from Britain. The "leaked" blood tests showing a clean Farah in particular smell like Coe vs Bubka to me. It also smacks of the 70's and 80's when the west tried to paint the Warsaw Pact as doping central to deflect suspicion from their own filthy deeds. USA sprinting and jumping has always been the avant garde of dopers.
A far more important issue is, what are the new PED's. That's why the NOP thing is so interesting, they make no secret of trying to always be on the cutting edge of chemical enhancement. They and Sky cycling seem to have engineered the famine-victim dynamo, a way to starve athletes without inducing lethargy and ruining their fitness. It's not certain how they're doing it, but, legal or not, it's winning - Kiprop is the last big star Kenya's got left on the track, and they're on the verge of losing the steeple too.
What's worse - banned PED's that nobody's testing for, or new PED's that work even better and aren't banned? If anti-doping is ever going to catch up, the new PED's are top priority.