I know that the whole thing is just a joke, but why did it accelerate away from our Sun when leaving the System? That's where the "light-sail" stuff comes from. Whatever, it's old beyond comprehension and meaningless to us.

... it found no sign of intelligent life to destroy.

I loved the show when it originally came out, but haven't kept up and seen these new seasons.

As for the Oumuamua it's all just conjecture. Apparently, it was spinning so quickly we didn't really get a good look at it. The whole solar sail thing was just a half baked guess as to why it accelerated on the way out. If it was really thin enough to act as a sail, from what we know*, it couldn't have held up while spinning that fast or last as long as it did.

*And on this thing we don't know squat. So maybe I should just go rewatch old X-Files episodes and forget about it.