That the relationships were as fickle as a McChat. I am unsure why you keep being confused these are USian mongamists. They expect an honest exclusive partner, and found out he was dishonest inclusive partner.

Okay, so the overall criticism is about sexual exclusively in general, but specifically when tied to legal ramifications. I guess I can understand that, but to be honest, I don't really know if I agree that sexually inclusive relationships are any less fickle. I also don't think the fact that they are western/American really is relevant considering sexual exclusivity isn't really unique across different cultures.

That partners are liberally free to have sex with whatever they want?

I think the confusion I had was because in different post it wasn't exactly clear if you were assigning criticism towards both partners, a single partner, or the concept of monogamy.

is morally irreprehensible in a liberal society.

This is something I still don't think I would fully agree with, but I can see your point of view. I personally think it's perfectly fine if two consenting adults want to agree to enter a monogamist relationship.

Yet they still chose to downrank my comprehension of the mcnogamist domineers spectacularizing a relationship situation. It didn't have to be a public event at all. But they liberally choose to.

Like I said, I personally don't think it's very tasteful, but I wouldn't read too much into it as a comment about monogamist domineering. To me I would more attribute it to people being messy bitches about their personal business.

I can boomer-translate it for you:

Lol, yeah...... Would not have guessed there was that much information conveyed in a couple sentences. You are really making me feel my age.