> If Ross let drug dealers sell fentanyl-laced drugs, which ended up killing someone,

This seems unlikely given he's been imprisoned for eleven years.

See: https://nida.nih.gov/research-topics/trends-statistics/overd...

You can clearly see that "deaths involving synthetic opioids other than methadone (primarily illicitly manufactured fentanyl)" didn't particularly alter or rise until after the 2013 Federal Bureau of Investigation (FBI) shut down of the Silk Road website and arrest of Ulbricht.

If the Silk Road Marketplace had any influence on fentanyl deaths Then some kind of spike would be expected during the years of operation, 2011-2013.