The notion of space as so friendly an environment people can just wander about ad lib doesn't seem very promising. Actually, the notion that people can just sneak into an army at all seems more like something borrowed from old movies rather than a real idea.
If that's what the article means, yea, that doesn't sounds very promising at first sight. I took it to mean instead that when they run into other folks at outposts or whatever they claim to part of a real armada, rather than actually sneaking into formation with the armada.
One Day I hope to be the Man my Cat thinks I am
Where are we going? And why are we in this Handbasket?