Thank you for raising awarness, and sorry to hear of your troubles! This is already tagged as a track (sr. пољски пут), which is a type of land access road primarily intended for local destination traffic (often meaning tractors, work machines, and higher clearance vehicles). I've added tagging to indicate that high clearance vehicles might be required for this section ("smoothness=very_bad", but as far as I know most map applications will visually still render it the same way, and routers should have already been penalizing land-access roads.