Adam Mosseri, Instagram's head, asserted during a landmark trial that users cannot be "clinically addicted" to the platform, with the case focusing on claims made by a young woman, Kaley, who cites mental health harm from addictive features. Mosseri acknowledged "problematic use" exists, likening it to excessive TV watching. The trial, one of over 1,500 similar cases, could establish liability for social media giants in relation to user mental health.