Why did the Buddha forbid nuns from criticizing monks but not the other way around? On AN 8.51

In AN 8.51 The following passages are to be seen - > A nun should not abuse or insult a monk in any way. This principle > should be honored, respected, esteemed, and venerated, and not > transgressed so long as life lasts. > > **From this day forth it is forbidden for nuns to criticize monks, but > it is not forbidden for monks to criticize nuns.** This principle should > be honored, respected, esteemed, and venerated, and not transgressed > so long as life lasts Is this rule understood within Broader Buddhist tradition as an authentic teaching of the Buddha, and if so, what rationale is given for allowing criticism in only one direction?