I'm arguing that a book is being used as a scientific foundation without any proof that the matter is actually scientific. We have a person who has a PHD in a completely different school publishing a book, without providing any of the science to back it up, and its being widely accepted as a fact.
When someone with a PHD in a field does a research paper, they include their research, and it is reviewed by their peers before it is submitted as a fact. How can you rely on something that has had none of these things done to it? It was written and published and that is it?
I just want to add that you shouldn't really argue about the importance of PhD, they don't really matter that much if you leave that field of academia after completing them. My dad has a PhD in chemistry and runs the IT department of a university (and does nothing whatsoever to do with Chemistry any more) and my auntie has a PhD in English Lit and is an accountant, a head of finance actually.
So what I'm saying is you're completely wasting your time arguing that having a PhD in a different subject doesn't qualify this person to write a book about zoology. He probably studied Linguistics years ago and then moved on and found a passion for zoology and mating behaviour patterns and became an expert in that instead. His past is largely irrelevant in this case, and you should be looking at the subject material of his book instead not arguing that he didn't do a degree in it.