Incorrect.
Firefighters do not go into a burning house unless there are people to be rescued.
Their job is to prevent the fire from spreading.
So they couldn't have done what you said.
But let's assume they did.
Why didn't they bring out the body? He would not have attempted to go in if he knew his child's body was outside the house.
Why did they leave the body to burn?
“Firefighters do not go into a burning house unless there are people to be rescued.”
And when they do a headcount and realize that the kid is inside what do you think they are going to do? They are going to go in and check.
“He would not have attempted to go in if he knew his child’s body was outside the house.”
He attempted several times after being told that his son was dead.