[runarberg]

This article merely showed that one particular sample (two releases of rsync) or not statistically significantly different (p > 0.05) on one particular metric (bugs per commit). All that says is that you cannot generalize group difference over the population using that sample.

This still leaves the anecdotal evidence. And anecdotal evidence is still evidence, and in the absence of better evidence, it is perfectly rational to react based on the evidence you do have.