I think the lawsuit in the article draws a reasonable, if not conservative, line at knowingly exploiting vulnerable people to boost profits, which a whistleblower is saying Meta is doing. It's not just that the product is harming people, but that it is going out of its way to harm people. Is open decentralized social media doing this?

There are restrictions around advertising for cigarettes, I think for the same reason. To take it a step further in discussing around cars, I think companies who sell certain sized trucks are aware of the blind spots that make it hard to see people in certain spots. Reasonably, these trucks should be banned, or at least more conservatively, no new trucks with this flaw should be built or sold or require a commercial license.