Thanks for the feedback, I realise the wording is a bit weird but because I'm using a specific theory I have to use their wording too. Think of it as being about meta-stereotypes, if that helps.

Interesting idea about divorce, but I think it would be difficult to link the two as anything more than a correlation. In the English-speaking world, "non-traditional" name choices are currently more common amongst the uppity older/professional/educated types, so if they're more likely to divorce, maybe it's down to those other factors. And in places where being contrary like that is relatively more common (in my native Finland almost 40% of women now make these "non-traditional" choices and it's not distinguished so clearly by education, age and career-orientation), it doesn't follow that divorce is more common.

Cursed be the situation where we need family-names in the first place: it just shows that there are too many of us on this planet.

Being of a mainly Celtic background I suggested to my wife before we got married that she might like to keep her family name in the tradition of my people; she thought that that was a good idea.
The only slight drawback is that people who know her but haven't met me before tend to call me Mr ..... !