it's the only logical conclusion based on the writings and work of the Ravenhearts, who coined the word poly in the first place.
I'll work my way back around to that.
Going back to the OP, I do find it ludicrous to invalidate the term
polyamory. At best, it might make an interesting discussion point. I've never much liked the term (not unlike
global warming) as vague & likely to lead to more confusion rather than clear anything up -- my preference has been for
responsible nonmonogamy, but "poly" is here to stay, as are the underlying symptoms.
according to Polynatural's argument, you aren't poly either then, Ravencroft, because the whole group isn't poly and interrelated.
Oh, yah, I grasp that.

I was responding directly to the quoted passage.
However, PN does overreach significantly, declaring the "arms" of the vee CANNOT be "in a poly relationship." I liked Annie's boyfriend Bob, & enjoyed living with him for two years, even though there was zero attraction between us. While not a
sexual triad, I soon considered him a close friend (& co-conspirator

).
Actually, I'm okay with being tagged as a swinger. Maybe others have had negative experience, but I hung around a couple of swing clubs (almost always for the social outings & dance nights; they had a hotel ballroom they both regularly rented) & enjoyed their company.
And I think there's swingers who'd be deeply insulted to be confused with polyfolk.
Since there's at least a half-dozen brief definitions that "everyone agrees on"

rolleyes

, it's possible for someone to "cherry pick" from them, attaching a phrase here to a sentence there & crowing about how
official the ghastly mutant is.
Then there's creative word-bending. Leaving aside the self-serving redefinitions, the "sex stuff" has been a point of contention all along -- in polyamory, polyfidelity, group marriage, intimate networks... -- even if actively ignored. Some definitions duck around the "sex qua sex" issue by pretending that all non-abusive interactions are therefore "loving" & thus also "romantic."

Others reserve "real poly" only for those relationships intended to last forever... even if someone's average for such "commitment" rarely lasts five weeks.
Such a messy clause certainly appears in Morning Glory's definitions. One person can look at the words & declare MG says polyamory only involves serious committed lifetime relationships (their definition of "loving"), yet another person can claim MG says random sex with nameless strangers is of itself polyamory (the "loving" that's probably closer to MG's intent, as she elsewhere includes swingers).
I guess they'd both be...
right, sorta, though reality is probably somewhere in the middle. But, that's a problem with relying on crib-notes rather than actually studying.