I think ERIC is very measurement focused. Not sure if that is actually the most reliable method but i assume he listens as well. From what i understand 8 windings also has some scientific background, as well as being something he found in his measurements. (if i remember that correctly?)
I know i saw them linking to a very mathematic/scientific document that went into details about similar logics, using ferrit cores, but for another use-case of course.
Having said this, it is of course very possible that they have not tested things that Wijnand is now suggesting!
