I get they both are "addictive" given the broad sense of the term. Yes, your brain gets a little reward with each refresh. But I don't think it's fair to compare the addictive nature of social media to heroin. (Let alone their impact on people's lives. But even putting that aside.)
Do you really think social media and heroin should be regulated at all similarly?
Yeah social media is more like alcohol. Feels good in the moment, leaves a hangover if you stay away for any meaningful amount of time, is completely legal and generates a lot of profits and tax revenue. We all know it's bad for us and society at large, yet most of us can't stop using it. Can lubricate social relations but also potentiates abuse.
You aren’t locked into Heroin. Don’t use it.
Consumers vote with their dollars.
So, if you’ve got a better idea, synthesize it and see if they come.