There is a difference between argument by analogy and using an example. The relevant difference here is that examples illustrate arguments that are made separately, like how calef spent paragraphs 4 and 5 restating the arguments sans laptop.

If anything, the argument from analogy here is in the comparison between human working memory and computer RAM and a nebulous "size in mindspace," because it is used as an important part of the argument but is not supported separately. But don't fall for the fallacy fallacy - just because something isn't modus ponens doesn't mean it can't be Bayesian evidence.