No,they were cultured but most of them ended up marrying Hindi and preffered their kids learning Hindi more than Somali.
It was most likely because of self-hate
Find it hard to believe that they haven't picked up any Somali. My aunt who married a Turk speaks Somali to her kids. That is her first language and obviously she feels comfortable speaking that to her children. Her husband is at work all day, so he can't really do anything about that.
Also, if the mothers are cultural and Somali is their main language, even if they don't speak it to their children, the kids will pick up on it. Fob Somali mothers spend so much time talking to friends and family on the phone or when they visit. Somali hooyos love talking.