I would also say that for pre-elderly cohort iPhones are also hard to learn. Gestures are completely baffling for unfamiliar people, and Apple generously removed basic on-screen buttons. Dealing with files is nightmare (yes, people still dare to use files in a year of our lord 2025). Back button being inconsistent and badly placed doesn't help. Native mail app works unpredictably (I couldn't be bothered to debug if it was a user error or not), so I've installed them gmail. Other random minor issues often rise up too. For instance I had to teach them icons in a Safari at least three times on separate occasions.