Genuine question: How is this clear? What lever could Zuck pull that would prevent this harm? From the research I’ve read the harm of social media is, almost

Genuine question: How is this clear? What lever could Zuck pull that would prevent this harm? From the research I’ve read the harm of social media is, almost exclusively, in the zone of what people post on it (ex: bullying) or what they are seeking to accomplish by posting (ex: looksmaxxing). I struggle to see how the harm that causes is caused by the ability to share it.