The author either knows basically nearly to nothing in computer security and password bruteforcing, or knows stuffs but miserably failed to properly communicate

The author either knows basically nearly to nothing in computer security and password bruteforcing, or knows stuffs but miserably failed to properly communicate the hypotheses used (he did communicate some of his hypotheses, but not in an appropriate way that would have rightly prevented the general public from making password choices based on this article while under radically different conditions) and caveats to take into account when interpreting his examples. This article is misleading in the sens the results it gives are only applicable for very narrow cases, and fast reading it can give the impression that "J4fS<2" is a "secure" password and that "this is fun" is even more secure. While this can be true under those very restrictive hypotheses he used, the fact that it was not prominently warned that those hypothesis should not be blindly used for basing password choice for random online web sites or other things makes this article dangerous.