The difference with drugs today is that a lot of them can easily kill you or create a physical dependency after the first use. Alcohol won't do that unless you're just chugging Everclear and trying to hurt yourself.
It makes no sense to have a ban on marijuana or magic mushrooms, but crap like Fentanyl and NBOMe should be illegal. They have zero potential to help and are almost certain to harm.
Fentanyl, a commonly prescribed pain-killer, has zero potential to help?
Just because misuse often overdoses the powerful drug, doesn't make it useless.
The issue is not just overdoses. It's long term physical and psychological dependencies that drive people there to begin with. A lot of addicts become addicted through prescriptions, and then they doctor shop. And in some cases it has even come out that doctors received kickbacks from the pharma companies.
I'm 100% in favor of banning synthetic heroin pills. They shouldn't exist.