From this sentence, my personally understanding is that biotechnology really matters with human being. Biotechnology is "not about technology itself" but "about human beings empowered by biotechnology." In the later passages, author talked about "desire for better children, superior performance..." From this, I can get the message that biotechnology is nothing without making people's life have some changes. And at the same time, author talked about concerns from biotechnology. In fact, what people actually worry about is not just the technology, but the effects that the biotechnology will bring to the human beings based on this sentence I annotated.