There's enough smoke around Mo that the questions should be asked. Salazar has a doping conviction to his name (albeit fit testing PEDs on his children rather than athletes, and there's the L-carnatine stuff which was murky and during which Mo was not entirely transparent (trying to tread carefully here). Btw, there's plenty of smoke around Jerry Schumacher as well - Houlihan's doping positive, Jager turning up on the Fancy Bears list, and him sending athletes to Doc Brown.
But for it all, I still err on the side that Mo wasn't doping. The main reason is that it's virtually impossible to cover-up something on this scale. Too many people have to be complicit and eventually, someone talks or makes a mistake. That's how all major doping busts happen. With Festina you had someone making a mistake transporting PEDs, with Lance Armstrong you had someone turn whistleblower. It wasn't the authorities catching these guys, it was the people involved either screwing up or cracking. With NOP, we've had very little. Magness basically showed Salazar pushed at the edges of the rules, Goucher showed that he behaved like an a$$hole. Nobody has shown any even semi decent evidence of a doping conspiracy. And so many people would have to be involved in the acquisition and application of systematic PED use. And this was supposed to be happening in the US where there are plenty of outlets to report to if you have any evidence at all. I view this like the whole faked moon landings conspiracy: too many people would need to be involved to cover it up, and if you believe that would be easy, then you vastly overestimate the competence of both institutions and individuals.
