If there are sufficient grounds to believe that Dark even allowed for the possibility, however unlikely, that the territory belongs to the opponent, then Techpor, as an experienced player, should assess the risks... in this case, it seems to me this is a key point.

Added after 6 minutes
By the way, clarify the situation: say there is an Imp dwelling, a chest, a level 1 artifact, and the guard has been moved... can you take the artifact without fighting? Only on Jebus (in the sense that here they lie unguarded)? Is it impossible at all? Why?