Formally the same as stating "Everyone should get off the addiction driven drug cartel, but the government shouldn't have a single thing to do with it."
For social media it is a whole different problem from it being entangled with protected speech. We don't want 'arrested for spreading misinformation defined as anything which contradicts the offical line' to be a thing.
To my mind greed and will to monopolize resources by virtual scarcity is what create a cartel.
Prohibition might help such a scenario, yes. but gouvernement don't need to regulate with extrem policies like prohibition which indeed often prove counterproductive. Permitting legal sell under certain quality control, honest information and education on known outcomes, regulation on who can produce, sell, buy and use in which proportions.