Kirti Joshi has claimed a proof of the abc conjecture - based on Mochizuki's work.
@stringking42069 on X-Twitter attacks complacency and corruption in the string theory establishment, from the point of view of a young string theorist who wants to get on with discovery.
Incidentally, Joshi's work (again building on Mochizuki) involves "arithmetic Teichmuller spaces" that remind me of the moduli spaces of perturbative string theory.
