However in terms of practical changes, this post can neither benefit you nor anyone else. We all know about broken management cultures that this post describes, but none of those managers in question would do anything but become extremely defensive if confronted by a post like this (which they wouldn't be because they don't know what Hacker News or a technical blog is).
To the clueful neutral observer we have to weigh out whether management is really this clueless, or is the author a poor communicator full of sour grapes? Honestly it's 50/50, but I would probably be too nervous to ever hire someone who posted this vitriolic of prose publicly, it just comes off as unprofessional.