States sue Meta over alleged addictive design harming young users

29 states have joined a federal multidistrict lawsuit in Oakland accusing Meta of intentionally designing addictive Instagram and Facebook features that harm young users, including alleged data collection on under-13s; they seek up to $200 billion in damages and product redesigns, with a 6–8 week trial featuring testimony from Mark Zuckerberg, Adam Mosseri, and whistleblower Arturo Béjar, and possible reference to internal Meta research on teen mental health.