Opioids don’t just jump into your mouth/nose/lungs/veins. Someone has to put them there. If you do that incorrectly, there is a risk of death. You sound like one of those cops that “overdosed” on fentanyl just by looking at it. Anyways, I checked out the “weapons sales” allegations and couldn’t find anything to substantiate that claim. Also, Wikipedia appears to indicate it was explicitly disallowed in the rules you claim did not exist.
“The site’s terms of service prohibited the sale of certain items. When the Silk Road marketplace first began, the creator and administrators instituted terms of service that prohibited the sale of anything whose purpose was to “harm or defraud.”[) This included [child pornography]( “Child pornography”), stolen credit cards, assassinations, and weapons of any type; other darknet markets such as [Black Market Reloaded] ( “Black Market Reloaded”) gained user notoriety because they were not as restrictive on these items as the Silk Road incarnations were.”