@dalias Yes, as it is that portals over D-Bus are kind of "A|B" in my opinion and distro shell scripts to make useful things out of non-systemd init looks like the popen coupling sometimes, but that's my opinion.
Maybe that non coupling design is not coupling, but it can become in integration because of the lack of various things. Conversely, the tightly coupling dbus is just a bus and you could reproduce A|B with APIs, no?