I am glad that Ulbricht has been pardoned and I feel like a small iota of justice has been returned to the world with this action.
Which is what this boils down to. Ross didn't know what people were selling. Could be pure high-quality stuff, could be contaminated stuff, could be stuff that was cut up with fent. He made money either way.
Drug producers want pure products. It's almost entirely middlemen who cut drugs with whatever random chemicals they have on hand.