Right, so..he's a deist in the latter, not an atheist.
And isn't it a shame when a person gets older and gets a little sloppy in his faculties?
Anthony Flew was famous in atheist circles in about 1962(when he actually appeared on TV) seven years before I was born. But until theist started trumpeting him, I had never heard of him. His most celebrated work on Atheism was published in 1950
So 50 years he is not an authority, to be despised in Theist circles. And more or less, forgotten in Atheist ones. However, at age 81, he became a Deist...utterly rejecting the Christian notion of God...but all this trumpeting seems to conveniently leave this part out. There is also the odd fact that his work rejecting atheism, is filled with American expressions, despite being a life long resident of the UK.
It is unprovable, but it looks to me for someone in the declining years, forgotten by the public, suddenly gets fame and money, with a book that doesn't even seem to be completely written by him...isn't all that sound of an authority to appeal to.
And even if my suspicions are incorrect, it is still an appeal to authority.