It’s not necessary to search for mystical reasons for multiple, sometimes contradictory , opinions in the Oral Torah. For an accurate transmission of anything as extensive as the Oral Torah you need a stable environment. King Menashe’s 50 year reign of terror saw nany chachomim murdered and others forced into hiding. The Babylonians and Assyrians slaughtered hundreds of thousands and exiled others. The Romans did the same, creating an environment making it difficult to accurately remember. Just look at Masechet Succah. Much of the gemarah deals with the fact they couldn’t remember how many walls were needed nor the minimum or maximum size, and that was only 3 centuries from the churban.
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