Not sure if your statement is serious, but I applied by phone in November. I asked if they needed a BC, and they answered: "We don't need one for you", as if they might need a BC for some applicants.
Not sure what that meant, but I guessed maybe because they not only have earnings history, etc., but also I had military service they could verify. And, they asked for my mother's maiden name, meaning they could probably verify that my parents were citizens, had paid into system, etc.
I don’t know either as I also had to supply a DD 214. I applied on line in Nov and the instructions said I needed a birth certificate. When they called me to ask a couple of questions they said I no longer needed one.