One might argue that the author hasn't done an effective job of welcoming women to coding. One might even argue that the author has misguidedly had the opposite

One might argue that the author hasn't done an effective job of welcoming women to coding. One might even argue that the author has misguidedly had the opposite impact than he intended. But claiming that the author is misogynistic seems way overboard to me. And the fact that people are commenting on the author's agenda could be evidence that people are defensive or in denial that they are part of a system that is biased against women as much as it is evidence that the author maybe hasn't done the best job of combating that problem.