I’m guessing with the two bolts you are virtually eliminating that rotational stress on the bolt and bushing by spreading it across two points. Also guessing that significantly reduces the deflection in the bushings as rotational force would result in upward movement of one bushing and downward movement of the other, no?
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But that only addresses the differential. In the case of wheel hop, you still have the rest of the suspension assembly (half-shafts, ring/pinion, A-arms, etc) that are subject to the whipsaw motion.
But honestly, spinning is not winning, so if you're hitting wheel hop or spinning the tires at all, you're not netting the best dig.