The alleged refutation is no refutation by the biased publication. Islam recognizes the religion of the father as the religion for his children.
The publication says it was for convenience. Baloney! It was his religion up through age 7. He practiced some of Islam while in school. If he was a Christian he would have been listed as one.
As far as I could tell, in Islam a child is not responsible for his/her actions until they reach puberty. Only after puberty do they need to recite the muslim prayer, Shahada. There are also seven requirements one must fulfill when reciting the Shahada, including sincerity and understanding, otherwise it is meaningless (for the full list, see
here).
So based on this, would you say that a seven year old would fulfill these requirements to become a muslim?