It's not a coincidence... they literally just span up agents on every possible variant of the problem.
There are 10k agents and Tristan's approach wasn't even groundbreaking novelty, it was literally based on existing published literature from Diego Córdoba and Luis Martínez-Zoroa that the agents have seen.
It's not just probable that agents would persue his particular niche of trying to construct a blowup. It's guaranteed if you just consider the basic setup.
The coincidence is that they took the correct path out of “every possible one” exactly after one of their users took it.
Monkeys on typewriters excuse only works for huge companies who can afford to buy opinions.