I would assume that is against the laws of the country in which this server is hosted, so I would also assume the answer to that question is a firm no. Keep in mind that the server hosts in the fediverse typically aren't companies with teams of lawyers on retainer, but individual hobbyists and enthusiasts. It would be a bit of a dick move to expose community volunteers to that kind of liability imo.
Save that kinda stuff for Dread or other darknet forums, moderating it on clearnet would be a nightmare, even setting aside the legal issues its a terrible idea to use a public forum on the clear net to source drugs, moderating it would be a complete nightmare just in dealing with scammers and spam alone.