2 years life sentences just because he runs a dark website? Well, in as much as the petition might help, many people might not want to participate because of the fear of being tagged as members and users of the website. And I guess why he was given the two years sentence is because he knew the site was being used for illegal activities but still runs it.
You ending sentences says it all! He runs a dark net website which is against the law, so he deserves and should serve his punishment!
His case is not different from that of another dark web site "Alpha...something " (I can't really remember the full name). I read in the news that the owner was caught who took his own life in the prison. He would have probably said that he just open the site and never sold anything and defend his right. No! he took his own life because he knew the implications of what he has down.
If the court truly found him guilty, no amount of petition can save him, he should serve his punishment.