Not to join the hate train but it probably isn't better than Terrence Tao at solving the problems either, since this Tao would have probably been able to solve the problem himself and would have probably taken less time. There were participants in this contest that were better than the AI.
Seems fair - I strongly think that "certain formalized problems" is very very far away from doing actual maths! And that actual maths is sometimes much less about solving known conjectures and much more about developing new theories.
"Better than Terrence Tao at solving certain formalized problems" (not necessarily equal to "Better that Terrence Tao at maths) isn't.