tl;dr: After upgrading to macOS 27, the author found Apple had removed the toggle to disable Apple Intelligence, re-enabling AI features despite a prior explicit opt-out and consuming 22.28 GB of disk space. Some features can only be hidden via Screen Time parental controls, and unkillable Siri processes persist even when Siri is off. The post frames this as part of a broader pattern in the AI industry of ignoring user consent.