And then you want to run it on Alpine which isn't even compiled with glib and everything falls apart.
I think I know what you want to say (please correct me if I'm wrong); you can always provide more formats or reduce dependencies and go deeper.
But to me there's no reason to do that. Some infrastructure is always required, even if you just reduce it to the kernel. Demanding that a piece of software be installable without any (p)requirements whatsoever seems not something that is demanded from anything besides Flatpak (or Snap). So to complain that Flatpaks require a specific service is not a valid complaint.
Given how common Flatpak nowadays is - almost all distros support it out of the box - I would even say that this complaint is not even valid with regards to Flatpaks.
