Users wanting to disable Spotlight and Siri in macOS Tahoe face limitations. System Settings only allows turning off Siri Requests, leaving background processes active. For Spotlight, unchecking items doesn't stop indexing. Terminal commands offer more control but don't fully remove these features.

The recommended command `sudo mdutil -a -d` disables both indexing and searching, while `sudo mdutil -a -i off` is less thorough. Both leave core processes and hidden folders intact. This reflects Apple's deep integration of these services into the OS, making complete removal difficult without disabling System Integrity Protection.

For most users, these partial steps reduce resource use and privacy concerns. Power users seeking absolute removal would need to modify system files, a risky process. The ongoing debate highlights the balance between macOS convenience and user control over background services.