There are many different grades of understanding and evidence between the extremes of absolute ignorance/confusion and a true no-nonsense scientific approach. Based on what Drexler writes in this article, I do think that my understanding of the issues at hand (i.e. the state of the current public opinion about Darwinism, the factors influencing it, and various linguistic claims he's made) is significantly more accurate than his, and my understanding suggests that his hypothesis is false. Of course, to substantiate this claim I would have to explain my position at length, for which I could hardly find the necessary time and space in the context of this discussion.
Nevertheless, if some evidence could be found for his position, it would provide an interesting challenge to my own ideas about these issues, and it could lead to an interesting discussion which wouldn't require me to first write a lengthy explanation for why I believe his ideas are mistaken. That's why I asked.
I feel that the term "rationalism", as opposed to "rationality", or "study of rationality", has undesirable connotations. My concerns are presented well by Eric Drexler in the article For Darwin’s sake, reject "Darwin-ism" (and other pernicious terms):
So, my suggestion is to use "rationality" consistently and to avoid using "rationalism". Via similarity to "scientist" and "physicist", "rationalist" doesn't seem to have the same problem. Discuss.
(Typical usage on Less Wrong is this way already, 3720 Google results for "rationality" and 1210 for "rationalist", against 251 for "rationalism". I've made this post as a reference for when someone uses "rationalism".)