That said, I do think he absolutely deserved to be released, not because he didn't deserve to be locked up in the first place, but because he's clearly been rehabilitated and has done great work during his time in prison. All that considered, ten years seems like a not unreasonable prison sentence for what he did. I hope he'll continue to do good when he's released.
The guy operated a marketplace for illegal goods in order to enrich himself. The illegality wasn't just incidental, it was literally his business model -- by flouting the law, he enjoyed massive market benefit (minimal competition, lack of regulation, high margins etc) by exploiting the arbitrage that the rest of us follow the rules.
Said a different way, he knowingly pursued enormous risk in order to achieve outsized benefits, and ultimately his bet blew up on him -- we shouldn't have bailed him out.
People don't really care about child rapists see the Christian churches.
Also you were able to buy everything on silk road including guns. The multiplication effect of this is potentially more worth.
Nonetheless it's still a straw man argument. I personally would not mind at all increasing prison sentences for child rapists.