Thanks to said API, Tailscale on MacOS is even distributed as a sandboxed app through the Mac App Store [1]. Flatpak's restrictions make certain classes of software difficult to use on "atomic" Linux distros like Silverblue or Bluefin that provide a read-only base system and expect users to get their software through Flatpak.

[1] https://tailscale.com/kb/1016/install-mac

I daily drive an immutable Fedora spin and if I wanted to install Tailscale I would most likely add it to the base image via `rpm-ostree` instead of trying to reach for Flatpak - not because i'm aware of the issues but because it makes more sense to me to add a more system-wide networking layer to the base image. That being said there are many apps that are not packaged as Flatpaks that I end up adding to the base layer out of necessity which I would have liked to use as Flatpaks.