Cannot disagree more. Dawkins is, and remains, one of the foremost and most pre-eminent evolutionary biologists of our time. . He is a “polemicist” only in as much as a small proportion of his writing has been given over to criticism of the redundancy and absurdity of religious faith/belief. Certainly if you asked him, the last thing he’d describe himself as is a polemicist.
However, if he is to be described as such, you could not wish to meet a more pleasant polemicist. He is courtly and courteous, and duly respectful of tradition - though rightly and properly intolerant of intellectual absurdity and ready to respond to robust debate in kind.
“Quite the decline” is not only wildly inaccurate, but somewhat insulting. I’ll credit it to you as, hopefully, unintentional.