Other researchers tried to replicate the study but found no firm evidence for the assumption that programming language matters:
"This doesn't mean it's not true," said [Emery] Berger [, computer science professor at the University of Massachusetts Amherst]. "It just means that many of their claims failed to hold up. There's a joke among data scientists that if you torture the data long enough it will eventually speak. Just because you have data, it doesn't mean it's the right data to establish particular claims. GitHub repo data is a great resource, but not all facts can be ascertained by analyzing it."