Christian Tafulaの資料(下記)を見ると、Siegel zeroes 予想で ”Remark 5.3. See also Remark 2.2.3 of Mochizuki’s “IUT IV” [14], in which it is explained that the calculations of Corollary 2.2 (ii), (iii) of IUT IV can be regarded as a sort of “weak” version of uniform abc. Such version, however, is much weaker than the O-weak uniform abc in Conjecture 5.2 (i), and thus, in principle, one is not able to deduce “no Siegel zeros” from Corollary 2.2 of [14] by using the methods we are employing here.” となっているね。いまのIUTでは、不十分ってことか
https://www.kurims.kyoto-u.ac.jp/~motizuki/ExpHorizIUT21/WS4/ExpHorizIUT21-IUTSummit-notes.html Inter-universal Teichmuller Theory (IUT) Summit 2021, RIMS workshop, September 7 - September 10 2021 Notes and recordings of the workshop Christian Tafula Santos From ABC to L: On singular moduli and Siegel zeroes, Reference: [Tafula].
https://arxiv.org/pdf/1911.07215.pdf [Submitted on 17 Nov 2019 (v1), last revised 18 May 2021 (this version, v3)] On Landau-Siegel zeros and heights of singular moduli Christian Tafula
