If we're just talking about that specifically then actually it might be quite good to have an audio book that uses the parents' voice, if we ignore privacy concerns about cloning your voice.

But the context of the post is saying more than that. They're talking about not spending time with the child and reading to them, which I think most people disagree with. Just as I think most people would disagree with just giving a child an audiobook instead of reading to/with them, irrespective of whose voice is being used