Meta has delayed its plan to use public social media content to train its large language models in the European Union after the Irish Data Protection Commission raised concerns about the company's approach to processing user data. The commission criticized Meta's reliance on the legal basis of 'Legitimate Interests' to process data without users' explicit consent, arguing it doesn't comply with European laws. The delay is a setback for Meta's AI development plans in Europe, but regulators stress the importance of respecting users' privacy rights from the outset.