I think a big problem is that he is not doing enough legwork to get out and talk about his ideas. Researchers should not publish major papers without doing a &#x27;roadshow&#x27;, especially when it is so dense with new ideas as Mochizuki&#x27;s abc-conjecture papers. Accounts of proofs and discoveries always have a climax where the author delivers a lecture announcing the discovery. Like Wiles announcing a proof (later shown to be flawed) of Fermat&#x27;s last theorem at a lecture in Cambridge&#x27;s Isaac Newton Institute for Mathematical Sciences in 1993. It is immensely helpful to talk through the proof in person facing an audience of experts.