> SailfishOS is more Linux based than Android
No, that's completely wrong. Linux is a kernel, not a specific userspace environment. Using systemd and glibc doesn't make it more of a Linux distribution. Most of the projects you're associating with Linux are cross-platform compared to Android's userspace which is currently Linux only.
SailfishOS has a largely closed source user interface and application layer, unlike AOSP which is open source.