I'm not so sure about that. What they have done is presented what amounts to circumstantial evidence based on possibly coerced testimony. And the testimony is from people who were already caught doping, so they themselves were cheaters. The tests performed for races are entirely non-circumstantial, and based on the science of the day. The new scientific information may or may not be true, but it is suspect already because USADA is in the business of one thing and one thing only: prosecuting people for doping. It's a case when your only tool is a hammer, then every problem looks like a nail.
As for proof of guilt, I don't think so. For a credible process there needs to be a prosecution, a defense, and a court. In this system there is only a prosecution. A defense was attempted, but there was no court to take it to. So the whole paradigm of guilt and innocence doesn't apply here in the absence of a system that is capable of judging.