I still don't buy it. For an introduction to roleplaying games to be useful:
1. The game must be appropriate (i.e. not Icar, Fear, Dog Town, The Artefact... etc)
2. The section must be detailed and be prevalent throughout. You can't teach roleplaying from a page of description, the entire game text must be written assuming no knowledge at all.
I think that is a lot of bloat given 99% of my blog readership knew about RPGs long before they got there.