Just a comment, you've said "Polygamous" where the correct word is "Polyamorous". They are not the same. Polygamy is marriage of multiple partners, often in "sister-wives" situations and often related to patrocentric power expectations in certain smaller religious instituions and cults. Polyamory is a romantic orientation allowing for multiple romantic or sexual partners. While the type of polycule a polyamorous person engages in will vary from person to person, the harem of wives thing doesn't really happen in polyamorous circles.

For doing such a close reading on the OP, you really skimped on my comment. Y'know, where I said "on first read" before amending with "but now", meaning I had one assumption but it shifted.