For the record, I do NOT see poly-fi as the same as monogamy.
Poly-fi can be a huge family of non-monogamous people. You are still non-monogamous, you are still open minded and you have still found multiple people to love. In the end, even though the relationship is consciously closed, you still have the "possibility" of something else happening.
I would bet mono would agree to. There is not really a chance of the door ever being shut completely.. I could be wrong of course...
In monogamy, that door, those risks to the heart, all of that.. is closed. Monogamy is safe.. poly-fi.. is "mostly" safe. Maybe.. sort of.. kinda
Thats always been my take anyways.