Why not blame his parents, instead of him? What does a persons name have to do with anything?
To an extent, it is a shorthand to a what person's family values were growing up. You can make a pretty good guess, that Mary Bridget O'Brien was raised in an Irish Catholic household, and may be the oldest daughter. Adam Cohen. is probably a first born Jewish child.
Barak Hussein Obama, Jr. We know from his name he is probably the oldest son of a Muslim. We can also guess that he didn't attend the local synagogue or church.
Knowing that his mother was nominally Christian, we can also guess that he would be a Muslim or not practice any religion as a child. His father, having left when he was little, and his mother marrying another Muslim, and shortly after moving to a Muslim country, would indicate he was raised in Islam. Whether he rejected that teaching at a later point is a legitimate question.
That's what we can glean from a name.