Every single government actor involved in this case is far more guilty than Ross and, frankly, they are the ones that deserve prison.
Yes, Ross should have realized you can't massively break the law and get away with it. He made a big mistake.
But the mistake he made was assuming that other people were more benevolent than they really are.
This young man viewed the world with a child-like, rosy-eyed perspective, and for that, he gets crushed by the boot of government brutality.
Disclaimer: I have no involvement with any dark nets or online drug trade.
edit: I don't know if he hired hitmen and if he did, I suspect it was in his own defense.
Legally, they do not. If you have a problem with that, take it up with (relevant to the federal laws at issue here) the Congress.
As for having a right to drugs, every man has a right to do what they please with their body.