I'm not at all convinced that AIs will inevitably expand at near-light speed, but if they do, then it is still surprising that they haven't encountered us. This is of course just the Fermi paradox, but still provides some evidence that we might just be very lucky and at the beginning of the pack.

If AI's don't necessarily expand much, then our outlook is even better, and concentrating on FAI here on Earth is especially important.

Lastly, it might be unlikely, but it seems possible that a young FAI on Earth could protect us from an older UFAI.