I don't think they purposefully picked their farm though as the default, but rather their farm landed on the center of the polygon they were using to represent the area being searched. Maybe we need to figure out a different UI way of doing this, but isn't this unavoidable? Search any country on any maps app and zoom in to the max - you will be on someone's property.
I don't think it is worth going over this again here, as I said there was a HN thread with more info including your question discussed at some length. It sounds like they moved it to a lake to limit the chance of it happening again.
I know exactly the thread you are talking about.
So they did choose a location - the lake, in response to the center being a bad location.