I'm just saying, if I wanted to probe every solar system in the galaxy, I'd build a craft with extreme geometry that would fly very close to stars and accelerate for a gravity assist before flying toward the next target star. So it would look exactly like what we saw.
You would have to identify the star that Oumua is going to for that theory to work. Seems like it should be pretty easy to know if it's going to the nearest star (or coming from one), and it's not originated from or going to Alpha Centauri.
The next question is whether or not there is some other logical path that defines logical gravity assists to visit as many stars as possible - nothing like that has been put forward either.
Afaik, it's coming from so far away that we have no idea what star it previously visited.
I don't think it's safe to assume it would come from/go to the nearest stars to us, as the flight path might need extreme changes that aren't in the fuel budget, especially given its already very high speed.
