This is such an overwrought conclusion. StackOverflow’s developer survey is just one metric. It may well be anomalous. It is certainly open to interpretation and critique (for example, “survey analysis hurts women”). The survey purports to reach a whopping 0.4% of all developers around the globe. This is absolutely stunning. Not.
Extrapolating from 56,000 developers to glean some kind of insight for over 14 million people is quite a reach. For one thing, we don’t know what types of developers choose to participate in the survey and what types decline (for whatever reason). There are undoubtedly a few kinds of selection bias built into the survey.
We also know polls and surveys are unreliable. They don’t tell the whole story. Political polls, for example, have poor predictive power and are frequently wrong. Polls, and the StackOverflow survey, provide interesting indicators that can help guide you, but you shouldn’t make important decisions based on just one survey.
There is absolutely nothing “official” about Mr. Rowinski’s thesis. It is simply hyperbolic ignorance masquerading as intelligent insight. The best we can say is that StackOverflow’s survey is an interesting data point. We must, however, look for confirmation and good judgment to go with it.