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.
He organized and operated a global criminal drug ring and conspired to have people killed. The only difference between DPR and Pabla Escobar is that DPR was running his drug business in the 2010s instead of the 1980s.
One of these people attempted to place hits on 3-4 individuals, the other one planted a bomb on a passenger plane that resulted in the deaths of over a hundred people.
Get some perspective and/or learn your history.