Apple's Siri development has faced significant setbacks due to internal leadership issues and a demo showcasing features lacking working prototypes. A report from The Information reveals poor leadership within Apple's AI/ML group, leading to an 'AIMLess' reputation among employees. The company's strict user privacy stance also contributed to the challenges. However, there's internal optimism now that Craig Federighi's 'Intelligent Systems' team is handling Siri development, and a shift towards using third-party models is underway.

Prepared by Jonathan Pierce and reviewed by editorial team.