If people want to do fentanyl they can go get it. Same with any other drig like ketamine, methadone, of oxy.
The problem is that fentanyl gets mixed into heroin.
Hopefully this will reduce the amount of fentanyl that gets cut into heroin. People cut with it because it’s cheap and adds potency. If fentanyl gets more expensive hopefully distributors will just sell uncut low quality heroin rather than augmenting it with something that is killing people now