This lady is amazing.
Even in really primitive cultures, places where fire is "advanced technology", people know better. They will tell you that the woman should have said, "We will cook a pig. You must come to our hut and eat the pig with us."
The people who are horrified about "moral decay" would probably not choose this as an example, but this is exactly what they are referring to.
Not so much what I would describe as "moral decay" as a breakdown in social conventions, in this case reciprocity. Social cement or "glue" is formed in a number of ways, but the form of exchange termed reciprocity is one of the most basic, and found in a myriad of forms.
Look up the potlatch feasts of the tribes of the Northwest coast of North America, and the custom of Japanese upon any occasion to bring gifts to someone, perhaps
bento (prepared boxes of food) or fruit. For business travelers, this has been elevated to an online industry, whereby a person on a business trip can order gifts (and from the region they visited) to be delivered when they return from the trip for them to distribute to coworkers.
In Japan, this reciprocal giving has been elevated by tradition to
giri, which would roughly translate as "social obligations." At worst, and in a curious parallel to the Kwakiutl and other Indian tribes, it becomes a contest whereby the recipient must always reciprocate with a better and more expensive gift. In the Kwakiutl potlatches, things could spiral out of control and end in murder or even warfare.
Naturally, the marriage customs of many cultures are nothing more than a form of reciprocity, and even the Kula Ring trade of some Pacific Islands is just a form of delayed reciprocity.
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