I have not read the book (I'm thinking about purchasing it, which is why I'm here), so I don't know what their definition of anti-science is, but it would seem, from my point of view, that this term is really describing people who will abandon science when it comes into conflict with their political and/or religious ideology. I doubt there are many Americans who are anti-science across the board (except maybe the Amish?).
Otherwise, one part of your comment leaves me scratching my head, and it's where you say, "we should not denigrate other considerations." What other considerations would these be? What other type of "consideration" (not entirely sure what you mean by that) has demonstrated itself to be anywhere near as legitimate as science? I would agree that it's good to be on the lookout for other options, but I know of no other options at this time. This comment almost seems like an anti-scientific one, suggesting that you would abandon science if it were to get in the way of a personal belief. I hope I'm wrong.