The author is essentially saying that criticism is a tool to hurt others. I find this idea interesting, and worthwhile to think about. A question I now have is, in this theory, who does one want to hurt exactly? Is it always the subject of my scorn I want to hurt with criticism, or is it more complicated than that - if I rant about Java on Twitter (I don’t do Java dev anymore), who do I want to hurt? Java devs? Oracl…
Interesting opinion. Criticism takes effort, something I am not willing to waste on those I don't consider worthy of my time. If I want to hurt someone, I ignore them. They get no feedback from me, no information on how to improve themselves.