I have to disagree with your historical narrative. It was not uncommon for non-Ugaas men to have more than wife, two was more common in actual fact. My Great Grandfather had two wives and he was not a clan leader etc. A poll on this forum would probably reach a similar finding with many of our Great Grandfathers having more than one Bah I bet. Most men who had a decent herd of livestock would take another wife as the years went by, it was the done thing. This Dhaqan is still carried on by present day well off Geeljires who are the best representatives of our nomadic culture. Even urbanised polygamous Somalis with wealth are an example of the continuation of this tradition.
Moreover, your historical reference alluded to this in its opening statement where it is emphasised that polygamy is indispensable among Somalis, it does not indicate it was the sole preserve of clan elites even though they would obviously have a higher number of wives over the course of their lifetime. The more children one had, the more Waran Qaad males a clan had and the higher the chance of one's lineage becoming successful in the future. All Somali males aimed for this and in times of plenty, it was not difficult to acquire a second wife with a healthy herd.
On a separate note, disregarding my initial troll post, polygamy is not advisable in the West in my opinion as it is hard enough to raise one family. If the argument is having more children, then why do many families now restrict the number of children they have by using contraception? Heck it has even become fashion for some Western Somalis to Haramly delay having children straight after marriage because it is not practical to do so or because they want to experience the honeymoon phase of marriage before kids come into the picture.
Many men who seek a second wife do it because of lust which is understandable from a male perspective if the husband and the wife are closer in age when they marry. When the wife hits menopause, the husband is still sexually active and I have observed that a lot of the older traditional generation seek a second wife partly for lustful reasons and partly because it is culturally ingrained to do so as it increase one's lineage. I reckon
@Roorigeg subscribes to this way of thinking. Nothing wrong with it religiously or culturally but it is understandably not welcomed by women in general, even more so by the younger generation of females who subscribe to marital fidelity and bonding for life.