There is approximately a zero percent chance the 911 operator neglected to ask if anybody was in the burning house. They didn't save the house but they did show up anyway to contain the fire.
The claim of callous disregard for human life you're making about American firefighters is completely unsupported by evidence. The closest example you have is case where nobody was harmed. But we've already established that you don't let facts interfere with your narratives.
Just because the person on the phone doesn't know if there is someone in the house does not remove the possibilities. But that isn't the only way there could be a risk to life from a fire. There are many things a firefighter is trained in to be able to correctly judge the risk to life. A 911 operator is not a trained firefighter. Dismissing the training of firefighters have is very disappointing.
The person on the phone often doesn't have all the info. It often happens that fire department only discover a risk to life upon arriving where someone mentions that someone is in the house. Or that X,Y,Z is there.
Someone phoned the fire department. The fire department didn't visit because they weren't on a list. The person who was making the decision if there was a risk to life was not on scene nor trained to make that decision. Someone dies the lawsuit would be massive for that level of incomptence.
The claim of callous disregard for human life you're making about American firefighters is completely unsupported by evidence. The closest example you have is case where nobody was harmed. But we've already established that you don't let facts interfere with your narratives.