That's why it's best to appoint vice host(s) who will be around when you aren't, that could either declare war or nullify diplomatic relations if the 24-hour diplomacy timer for that guild was still active.

As for the name, it's because WWII is too recent, there are still plenty of people who were in, or suffered directly as a result of it. Naming yourself after the most famous of history's recent *******s probably isn't a good idea, intentional or not (although this notion is more applied to people who would name themselves Hitler, rather than just Adolf). If you had named yourself Attila the Hun, Vlad the Impaler, or Ivan the Terrible, no one would have cared.