this might just be overthinking, but is the towns name (Golden Grove), as well as the sign a reference to Mystery inc. tv show? (where the towns name is Crystal Cove, and the town has a similar sign by the entryway)
It's not a reference to that. The lead of the first Our Life game is Cove Holden. So "Grove" and "Golden" match his naming convention! But that is a neat coincidence.