From the excerpt it sounds like the author is just describing one specific archetype from within a list of others included in the book and doesn't make any claims about it being a uniquely common type within every org, or the most common type of bad engineer in general.

In fact it gives the opposite impression by specifying "at least one", which implies the category is supposed to be distributed widely enough to be recognizable in an org of sufficient size, but not dominating the ranks of software developers in droves. That seems more like a strawman you're arguing against.