That's a good observation. I also think many came from a gang environment rather than a nurturing home life and the Nation of Islam and Islam in general continue that same type of atmosphere. It's more of what they already know. Christianity, OTOH, teaches family, too, but in a self-reliant, helping one another and loving your neighbor as yourself. Islam preaches giving to the poor, but only poor Muslims.
I still believe, however, that whoever searches for the truth in a sincere manner will be answered by the only, true God who is Jehovah - the self existent one. The Holy Spirit is in the WORLD to convict the world of sin, righteousness and judgment. No one will have an excuse.
It is my understanding that every year during Ramadan, when the Muslims are fasting during the day, that there are numbers of them who come to Christ as a result of visions and dreams of Christ appearing to them.
Those who are truly seeking God with a sincere heart, even if caught up in a brainwashed cult, will find Him. God will not abandon them.