we should be removing the harmful aspects of modern social, which are harmful for everyone not just minors, by making them unprofitable or even outright illegal.
Instead we are saying "only adults should use this" which, while technically regulating the industry, places the restriction on users.
We're treating it like tobacco or alcohol (2 industries who have similarly spent millions upon millions of dollars in lobbying efforts) but we should be treating it like asbestos.
OK, so what would be in the text of this law making it enforceable and not easily game-able by the social media companies and without severe unintended consequences?