We have no real way to prove Gould’s claim here. The structuralist hypothesis is hard to evaluate.
But look at the directionality shown in WHEE at history and evolution.com (but scientists won’t look at it): we see how a teleological system works and we have one in world history, visibly so. That makes us suspicious that ‘other things being equal’ core aspects of evolutionary emergence spring from a principle of teleology. Scientists by denying this so fanatically have delayed investigation into different perspectives. Frankly, the darwinian view is not proven in any way.