Polygamy and this bullshit concept of “group marriage” are two different things. Polygamy does not involve an equal and mutually reciprocal group. It is, by definition, just one guy with multiple wives. In practice, it’s basically always been little more than a sexist chattel slave system. I’ve lived in a country where polygamy was legal, incidentally. I’ve seen what it is, and it isn’t love. Wives are basically just status symbols like cars or houses.
“Group marriage” is the childish delusion that a group of people can all mutually and reciprocally bond the same way as humans usually organically bond in pairs.They can’t. They’re full of shit. They’re just acting out fucked up psychodramas. It’s commitment-phobic, self-centered men men exploiting women who are incest surivors, basically. That’s what all this “swinger” and “polyamorous” horseshit boils down to at the end of the day. Scumbag men taking advantage of emotionally fucked up women. I don’t really care, though, except for when they bring children into it.