Other data scientists are basically software developers with a very specific domain, a third kind focus a lot more on research and many data science jobs are some blend of all of these things. My point is that the author mentions in the intro how data science is very broad and then continues to focus on what's only a subset of all data science jobs.
With that in mind, the list is actually spot on - it's just good to know that it isn't relevant to many data science jobs.