Was Adam عليه السلام A Prophet?
It really is a big leap comparing something revealed in the heart of Musa(AS’s) mother with the whole Adam, Iblees incident. It is very clear from Quran that humanity started on the right path because the first human being was given the whole message. Adam (AS) and Nuh (AS) represent first phase of Prophethood with Nuh (AS) being an ataf on Adam (AS) and Aal-e-Ibrahim and Aaal-e-Imran represent the second phase of Prophethood with Imran being an ataf on Ibrahim (AS).