You're not grasping my point at all, and you're fixating on minutiae.
Then perhaps you could make your point without the distracting minutiae?
Neither husband nor wife allows their partner to entertain others in their bed. If they did so, this would be an open relationship. If you prefer, we might say 'encourage', but this is appeasment. If a man finds his wife in bed with someone else, he (usually) does not say: 'no worries, that's cool'.
OK - so you were talking of relationships that are not open. That's fine, but you made it sound like that's pretty much universal, when there are, and always have been, open relationships - of various kinds.
Not sure what you mean by 'appeasment' - whose aggressive demands are being satisfied?
Naturally, if one partner in what they understand to be a closed relationship discovers that the other partner is being unfaithful, they are likely to be upset and emotions can run high - particularly in honour cultures; perceived betrayal is deeply wounding.
The behaviour of the vast majority of human beings indicates that we believe sex/sexuality to be something of great power. We have enacted some of the strictest taboos and laws around it. Violations of these taboos lead to some of our strongest punishments.
Violating any taboo is likely to result in strong punishments, that's the nature of taboos. But I'd like to see cross-cultural evidence that breaking sexual taboos generally results in stronger punishments than breaking other taboos. Sexual taboos generally specify with whom (or what) it is not appropriate to have sex, and in what circumstances. This varies widely between cultures.
The very existence of the phrase sexual predator indicates this.
Meh; 'financial predator', 'online predator', 'social predator', etc., all indicate that predatory behaviour is not acceptable; they don't of themselves indicate strict taboos around topics of great power.
If you agree with those statements then we agree overall and there is no dispute.
I don't agree with these statements in general, though they may be true of particular cultures. I'm only disputing the apparently sweeping generalisation of some lifestyle preferences to everyone.
It's sad and strange that this has become a semantic issue.
This is a discussion forum; we discuss things and exchange views.
Can we now return to the OP?
Sure, go for it.