Board Thread:Theories and Speculation/@comment-3279282-20150118192300/@comment-1018594-20150118194558

Sound theory. That also explains why Madara, the only one besides Kaguya to awaken the Rinne Sharingan, was also the only wielder of Kekkei Mora as well. Naruto and Obito both had Truth-Seeking Balls but no Rinne Sharingan and thus, no Kekkei Mora. Makes sense.