I see Robot Farmers still a nice try but not a feasible solution. There are many aspects which are still difficult (e.g. Olives, general Trees with Fruits).
It's the same as for self-driving cars: on daylight and clear condition, they work fine, but in case of snow and in the darkness...well, no
Nitpick - self driving cars have worked fairly well in snow and darkness but still manage issues in good conditions eg. hitting fire trucks (Telsa) or not being able to merge in heavy traffic (Waymo).
It's the same as for self-driving cars: on daylight and clear condition, they work fine, but in case of snow and in the darkness...well, no