A lot of us are "newbies" of "tar", "find", "[" and many others after years and years using *nix. According to the anti-usability mindset, this means that the users are wrong and ought to be changed, and not an hint that we should rethink how we write and consume documentation.

Edit: the wording was angrier than it needed to be. A concrete example of a better documentation tool : https://kapeli.com/dash