story
Apple pioneered usable security with TouchID and the secure enclave; a lot of Android fingerprint readers were gimmicks for years, same with the face unlocks. https://manuals.info.apple.com/MANUALS/1000/MA1902/en_US/app...
They also invest piles of money into privacy https://apple.com/privacy (1 minute overview), https://apple.com/privacy/features (in-depth with links to whitepapers).
I imagine that's where your teacher was coming from.