It is NOT science. That is philosophy. Of course that is the heart of the whole problem, so many confusing the philosophy of religion with science.
We agree. But does Dennet know that he has strayed out of the realm of science and into philosophy? Judging from the rest of his article, I am not so sure.
As you say, too many confuse philosophy with science. And as Dennet shows, it is not just the creationists who have this trouble.