[QuantumChaos]

Your post captures the problem much better than the linked article.

I would summarize the problem as being that the result is tautological, but the gloss of mathematics gives it the appearance of not being tautological.

If people said "diverse teams are better because people from different backgrounds are good at solving different kids of problems" then that would be accurate, but leave room for debate about whether then assumption is true. If they say "diverse teams are mathematically proven to be better", this would be inaccurate, but give great ammunition to argue that science supports progressive views.