But macOS makes it extremely difficult to search your local files (without using Spotlight) so you effectively cannot search your offline APFS without revealing your local queries (to Apple, at a minimum).
This seems wrong.
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I've met several $100k+ tech geniuses who absolutely refuse to believe this behavior is normal/default – but a local PiHole (or simple internet searches) reveal this Truth (capital t, with respects to DFW).
While providing over-the-shoulder IT support, I saw a hardware designer for a tech company enter proprietary company information into his "local" Spotlight search (to find a CAD file he had recently designed, demonstrating that the computer was "working"); when I told him about smoot.apple.com (e.g: Spotlight local queries offloading) his face turned white – fortunately that company only has a few thousand customers (very niche hardware designs for BMS/power delivery management), and no "real" competition... but he still refuses to fully believe the levels of telemetry in 2026.
(I think the LG TV story last month "woke him up"; the Bitcoin Ledger embedded SoC SIM key-thefts via man in the middle attacks should bring out the last remaining tinfoil hats). Stay frosty.