Would they necessarily know either? There is a lot of confusion during war, especially during the opening stages.
And to be clear, im not saying this because its iran. I also would be cautious of e.g. initial reports during ukraine vs russia. It simply takes time for people to pick up the pieces and figure out what actually happened.
There are numerous reports from a variety of credible sources of attacks on residential targets. Your argument, as far as I can tell, is a vague armchair hunch.