I was confused as well. I looked it up and apparently it's a reference to The Last Starfighter movie.

Don't trust the posts above! These were written by spies from Rylos! Once we smash the Frontier we will be able to rid ourselves of the Star League!

Centauri! Is that you? It's been a while.

Down voted for not knowing the film inside out, great.

Downvoted for bringing up chatgpt out of nowhere as part of a complaint.

For sure. People really need to stop complaining about the obscurity of things they can Google. The first hit for "Xur and the Kodan armada" is a page from a fan wiki: https://thelaststarfighter.fandom.com/wiki/Xur

As somebody who plays very few video games and is forever looking up references, I promise that basically everything is now documented.