Analysis

Rui was satisfied with the plan that he had come up with under the constraints that he was forced to operate under, two of them, specifically. He wanted to make sure he extracted the giant esoteric ore deposit under the trunk of the tree before Deacon Industries became explicitly aware of its existence. He definitely would not consider taking it after they had already extracted it and begun transporting it.

Which meant he had to act as soon as was humanly possible. Given that condition, the plan he had created definitely maximized that outcome. The second the final layer of branches was being destroyed before they could reach close enough to get a glimpse of the esoteric ore, he distracted and obscured their vision with a few special smoke grenades before quickly extracting the boulder and immediately leaving the area. The two of them reached the tunnels they were headed for extremely swiftly without any hitch, just as they had planned.