[microtonal]

I think people got too used to bundling by Apple and Google. For most of the core apps there are good and open source alternatives available.

The main point is that AOSP as a system (modulo firmware) is open source and SailfishOS is not. Also, even though Sailfish has an Android compatibility layer (though only for official devices), compatibility is most likely always going to be worse than 'real' Android.

That said, I hope that Jolla Phone becomes a success, more competition is good. Hopefully being funded better will move them to fully open source the base system.