'Impotent' is a very strong word to use here. Dr Ong'ech meant that about 20% of all Kenya couples may have impaired ability to have children. NO WAY out of about 7.6 million men between the ages of 14 and 64 (reproductive age) 1.5 million are infertile. Either way, infertility is higher in women (10%) than men (2%). So, there should be an increased need for fertile women, not men.
Set out to correct the world's wrongs and you will most certainly wind up adding to them.