Short answer: Money
Since the device was repaired and you’re still in the first year, Apple has started letting people add AppleCare. Through the repair process and testing they’ve verified that the device is in a “fully functional state” and they are allowing you go get AppleCare.
If you plan on keeping the device for a while it might be worth considering.
I vaguely remember. It has to due with the couple living in an area where there are very few residents, I think they are pretty much the only ones there. Due to hat and how the triangulation works their address gets pinged as the location for Fond My services.