It may seem like a useless addendum but i've seen somali odeys bring up wanting a second marriage out of thin air. Given how marriage culture is in somalia it seems more important for a somali woman who wanna be monogamous than for other ethnicities women
If one needs to make their husband sign this to trust them, the marriage never had legs to begin with.
If a man hesitates to prove he is monogamous, the marriage never had legs to begin with.
It's not like the clause will prevent him from divorcing his first wife and marrying another woman. it just means the first wife will be granted a divorce. So, why can't a polygamous man divorce her and go marry a few WILLING women?
Sounds to me, that polygamous men get a thrill out of deceiving and forcing women into these situations, instead of finding volunteers.