Apple has explained that older iPhones lack the power needed for Apple Intelligence to run smoothly on device. Using Private Cloud Compute as a solution was suggested, but it seems Apple Intelligence is designed to work differently. Apple's John Gruber revealed that the models for on-device and cloud processing are distinct, with on-device models utilizing heuristics to determine task execution. Due to server demand and resource limitations, Apple Intelligence won't be supported on Vision Pro despite the M2 chip's capability. Additionally, users may face consistent permission requests to hand off tasks to ChatGPT, with no "Always Allow" option currently available. While this may change in the future, Apple is likely prioritizing privacy concerns. Overall, Apple's decision-making process for Apple Intelligence raises questions about device capabilities and the balancing act between on-device and cloud processing.