The article doesn’t say that he was prohibited from attending the funeral.
“He was under strict orders not to leave the house after school.”
“Do not leave this house after school” is not the same parental edict as “Do not attend a firefighter’s funeral.”
We don’t know what the eleven-year-old did (if anything) to prompt the father to give the edict to not leave the house after school.
Then why tie the article to the boy attending the funeral?
My guess is that the boy is a latch-key kid and his parents want to keep him as safe as they can....so no leaving the house.