US states are suing Meta, alleging its platforms, including Instagram, were deliberately designed to be addictive for children. This follows Frances Haugen's 2021 leaks and recent rulings holding Meta responsible for youth addiction. A 29-state investigation targets features like infinite scroll, accused of fostering addictive behavior. WHO data links such behavior to poorer youth mental health. The core question is whether companies knowingly prioritized user engagement over mental well-being, raising crucial implications for future technology design and accountability. This extends significantly beyond just social media platforms.