I see some core team on this thread, so just wanted to say THANK YOU! Awesome job! Keep fighting for the users!
I'm totally the wrong person to offer recommendations on mobile, but so far it works very well for me, but then, I use almost no third party apps, and none of them are Play store only. My only complaint is the hardware (outside of their control).
I wish that were true, but if you delete the 100s of binary blobs (many with effectively root access) copied from a stock donor vendor partition the phone won't function at all.
There is no such thing as a fully open source and user controlled Android device today.
I am alright with things that allow for improvement, at least in theory
SailfishOS is not open source itself. It's far less open source than Android which has the Android Open Source Project with the whole base OS.
Snapdragon uses a fork of the open source EDK2 as their bootloader prior to the OS and publishes the source code. It doesn't mean Snapdragon is open source.
Most of the firmware has nothing to do with the boot chain leading up to the OS on the SoC.
Looks like they are doing what a small company is able to do.