Frankly, this idea that performing KS tests 'concretizes' anything is a bit too brilliant to be true.
What is the version free of media hype?
Kolmogorov-Smirnov tests reveal the similarity of distributions, but that does not change the actual cash flows nor the behavior if the underlying data are the result of strong intervention.
For example, tests on our bond market data may show a 'similarity' with a benchmark, but this reflects the effectiveness of PBOC interventions and not a purely natural market dynamic.
The test does not prove an intrinsic truth; it measures a statistic in a given context.