I have theorized about agatha 2's purpose and I believe it's an embassy for his underground hoarder group. Nowadays nobody uses the surface web anymore (dead internet) they are organized in their private groups like families or more fitting, terrorist organizations. Seems the hoarder life is stressful to the point you frequently lose your devices/have to get rid of them so enter agatha2 into any browser, it returns the onion address and you can reestablish base with silvia who will add you to the chat etc.