I never met his dealer, but I'm sure the dealer saw the decay and did nothing.
Dealers have no morals. Even the law that bartenders aren't allowed to serve drunk people is an absolute farce. Walk into any bar in this country and you'll find drunk people being served alcohol.
Maybe there is more to it than whether something is legal or illegal.
Regular tax paying people who want to alter their mind; ok.
But also customers who break the law in order to pay for drugs.
And when and where is it okay to deal? Personally I would not want drug addicts frequenting any place where I am trying to live.
Then what about the product they sell: supplied by violent cartels? No thanks.
Designer drugs laced with who knows what manufactured in an overseas lab? Again no.