AI Galactic Achievement, what is the "so what"?

V0.77, just received a pop up notifying me that an AI opponent had completed a galactic achievement.

• That is cool, but why do I care?
• What does (insert achievement name here) even do?
• Did that impact the overall victory conditions?
• There is no game log icon, at least lasting until the end of the turn, that the player can return to and re-check the event.