The flashpoint of the controversy was a release. According to QbitAI, OpenAI released a batch of manuscripts claiming to contain solutions to several well-known problems in mathematics, numbering over 700 machine-generated proof documents. The Human Mathematics Association (AHM), led by Fields Medalist Terence Tao, immediately issued a joint statement fully boycotting OpenAI and urging mathematicians to stop collaborating with it.
The tone of the statement was described as extremely severe, and its core allegation is not about whether "AI can do mathematics," but about the manner of this release: no peer review, no readable human logic, and no respect or explanation for prior work. In the words of the report, the statement opens by dredging up old grievances, pointing directly at OpenAI as a company currently mired in litigation over allegations of illegal plagiarism, copyright infringement, and trademark dilution.
Two levels need to be distinguished here: the AHM issuing the boycott statement and OpenAI releasing over 700 documents are confirmed facts; whether "these documents actually solved the problems they claim to solve" has not been independently verified in the available material. The report itself also lists the actual mathematical correctness of the 700-plus documents as an open question.