* Large documents (50+ pages) (I remember having to deal with file corruptions, figures appearing at random places, formatting suddenly has a free will, ...)
* Lots of figures that get updated during the writing process
* Collaborating: merging several documents into one big report, especially if other authors do not follow formatting guidelines etc.
* Citations and references
* The authors mention it in the conclusions, but I think the test should also have included a scenario based on using templates instead of building something from scratch.
Other aspects why I prefer LaTeX:
* Version control with plain text files is rather convenient. And so is collaborating.
* Comparing different versions of the same document(s) is much easier with plain text (diff), although you can do something similar with PDF's
* I agree to a certain extent with the authors that scientific content is more important than the form, but I do prefer a traditional LaTeX look over Word documents. By far.
* I always use templates, and this speeds up the writing process significantly. Ideally, you can forgot about the formatting in those cases.
I think the authors make a good point though. Maybe we should invest in smarter/better/more productive LaTeX editors?
edit: formatting, added citations point...