Polygamy causes the imbalance of male/female ratio to begin with, not the other way around.
Read about elite of polygamy Haji Abdul Ghafar, a 75-year-old auto repair shop owner in Kabul. Haji was quick to say he sought youth in the four wives he’s married in 24 years. “Everyone who marries a subsequent time wants someone younger and better than his previous wives,” he said with a giggle.
Throwing the older wives out in the street, with or without their older children, is just worthy of a snicker.
Read about the suicide attack in Afghanistan that murdered at least 30 people and crippled many others for life plus another ho-hum suicide/crippling/murder
Suicide attacks are a top down problem. The only ones who can stop the madness are the elites of polygamy.