<ul data-eligibleForWebStory="true">Apple failed to deliver a promised Siri upgrade, raising concerns about its AI progress.Blogger John Gruber criticized Apple's leadership over the missed Siri upgrade deadline.Gruber's absence from an Apple event highlighted tensions and questions about the company's strategy.Gruber and Apple did not conduct their annual post-Apple event interview this year, possibly due to Gruber's criticism.Gruber expressed concerns about Apple's approach to AI and its impact on future devices.Apple's focus on AI at past events raised expectations, but the promised Siri upgrade has yet to materialize.Gruber's critique of Apple's handling of Siri reflects broader issues within the company's culture.Apple's response to Gruber's criticism was reportedly unhappy but private.Apple executives did not appear on Gruber's show this year, signaling a potential shift in their relationship.Gruber views Apple deciding not to participate in his show as affirming his independence and uniqueness in interviews.