I’d say these problems strongly encourage that sort of behavior.
I’m also someone who thinks building in abilities like this to LLMs would broadly benefit the LLMs and the world, because I think this stuff generalizes. But, even if not, It would be hard to say that an LLM that could test 80% on this benchmark would be not useful to a research mathematician. Terence Tao’s dream is something like this that can hook up to LEAN, leaving research mathematicians as editors, advisors, and occasionally working on the really hard parts while the rest is automated and provably correct. There’s no doubt in my mind that a high scoring LLM for this benchmark would be helpful in that concept.
Also, coming up with good problems is an art in its own right; the Soviets was famous for institutionalizing anti-Semitism via special math puzzles for Jews in Moscow Univerisity entrance exams. The questions are constructed as such that are hard to solve but have some elementary solutions to divert criticism.