>Case in point, I wanted to transfer a pic from an Android phone to an IPhone and was surprised to find that ios doesn't allow bluetooth file transfer! >This is the kind of thing that Android people like to complain about, but the complaint is based in a failure to appreciate that iOS doesn't work like Android.
I'm going to have to disagree with you here. Airdrop is basically the same thing as Android's Quick Share/Nearby Share, utilizing BT to find and pair devices, and then perform a direct wifi transfer of data. Android<->Android works no problem. iOS/MacOS<->iOS/MacOS no problem. Hell, I can even do this between Android devices and Windows/Linux machines. But Android<-/->iOS/MacOS - FOR NO GOOD REASON other than to keep them separate for capitalist reasons (doesn't matter what excuse you give it, brand differentiation, brand protection, walled-garden security - they're all excuses at the end of the day).
There's only very limited interaction with the file system in iOS. This is by design.
In response to that, Apple can very easily extend the functionality over the API-layer to allow the sharing of, AT LEAST, photos and videos between Android and iOS/MacOS devices without having to worry so much about this issue. No need to give direct filesystem access.