Lmao, Lukeg7812 claimed my old deckie base, I forgot about that.  Although I can vouch that there were NO autofarms there before he moved in and renovated the place, so that was either him that made those, or someone else that lives there.  As I visited there about a year and a half ago, and did not find those devices in place at that base or near it.  So they most likely were built within the past year and a half or so.