So the general concensus is that anything can be called an RPG.
If a tabletop combat game were produced that included a few pages about giving a name and some traits to your leader figure and was released as an RPG that it would be fine because there is nothing preventing it from being used as an RPG?
That is totally the Robin Laws chapter, too. Straight off his idea farm & into the wheelhouse, so to say.
(And to swipe a gag from his blog.)
Let's look at the article:
Vignettes can fill a number of roles in your story.
Interactions dramatize current conflicts between PCs or other characters.
Flashbacks illuminate past events in the characters’ lives.
Dream sequences bring a character’s inner conflicts to life in a surreal mental environment.
Transitions leap the campaign forward in time.
Third-person teasers use NPCs, portrayed by the players, to foreshadow events that enmesh the PCs.
That is much more a advice one then anything else. It basically is a brief blurb on some of the benefits of promoting resolution between PCs during vignettes.Interactions are the only one I don't really... get. Could someone explain those a little?

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.