I see right wing arguments on both sides

[Bluenorthwest]

32. Hey, lots of people have had group sex in the past, that's not what we are talking about here

We are talking about, according to you, marriages. And that's not the same thing. It's you conflating polyamory with polygamy.
And to be very blunt with you, the polyamorous people I have known were not interested in confining their polyamory to a formal relationship, that is they were not seeking polygamist marriages, but rather no marriages or very open marriages, situations, ways of living that would never limit their ability to put the poly in the amory. That's what I know in life, polyamorous folks who do not wish to be tied to specific persons. I have see polygamy in practice and it is not polyamory in the vast majority of places globally or in the US. It's a guy who marries younger wives every couple of years. Can't get around that fact. I'm telling you that the Polyamorous people I have known would not in fact advocate for polygamy as it is practiced in the US because it is the very opposite of a liberated and autonomous polysexuality.
So there is no such movement as you try to describe because there is not any sort of unity between the polygamists and the polyamorous folks. The people I know who are pan sexual or polysexual do not look at Mormon based or Islamic polygamy and think 'these are my people, we must free my people'. This is in part because those religious polygamists are stridently opposed to polyamory, pansexuality, and to those who practice these things. Nations with legal polygamy almost always outlaw homosexuality. So claiming those are some Rainbow Tribe free love enthusiasts is a shitty lie. A big, agenda based lie.