Would you testify if you are 25, top 30 and depend on ATP to make a good career and money?
Of course anyone in similar position would say they have no idea about that, because for one thing they couldn't prove it and for the other they would have to start college...
There are thousands of ex-players, coaches, trainers etc. The percentage of them saying ANYTHING doesn't even amount to statistical error.
If there were anything like an cycling situation here it stands to reason the conspiracy theorists would have more to go on than a washed up Rochus or trying to tie Agassi taking crystal meth to doping by analogy.
The thing about a conspiracy theorist is that no amount of an ABSENCE of evidence will ever mean anything to him.