I understood the article a bit differently: if you rant about Java, don't pretend that this is only to educate other Devs and open their eyes to sad realities. There is another, less benevolent side to it, a destructive side, that on purpose does not attempt to weigh pros and cons, but focuses on the shortcomings only. Obviously, if your rant is well presented, lovers of Java will have a hard time keeping up their love. And knowing this might give you additional satisfaction. So criticism is not primarily a tool to hurt others, but recognizing the involved hurting aspect is essential to understand the whole dynamic of criticism, and its very personal nature.