The situation with systemd cannot be compared to special circumstances of Godot and shady practices of its management. It's an essentially open core but privately owned product. I guess this is a better arrangement than Unity but it is not a true FOSS engine in the sense of the word.

How do you expect W4 games (or any other porter) to release FOSS exporters to proprietary consoles, when they rely on SDKs that are covered by an NDA?