Earlier quoted context omitted.
In my reading of the TFA, it's not. It's the idea that less aggressive individual were naturally selected, partly via sexual selection of the males by the females, partly by pruning of the most violent individuals by the whole group. Nothing to do with the domestication of one group by another.
I see that theory about female selection being pushed a lot lately, but it's a fairly easily debunked theory. Female selection didn't occur in human society. Females didn't get to choose who they married. Rather it was the men who decided which females marry which male. Also, there is far less diversity in the Y chromosome than the X. The best possible explanation is during ancient tribal war, the winning side killed…
First, they sometimes cheated.
Second, arranged marriage is normally set up by people who largely share DNA with those getting married. (the parents negotiate) Since the DNA is pretty much the same, genetically it's as if the bride herself got to choose.
Third, opinion of the bride was not universally ignored.