I have a few points to make about this post. The basic allegation of the post is that Christianity is not intellectually defensible.
1. Well, to pick on people like Ray Comfort and Ken Ham is picking on low-hanging fruit. They don’t represent the cream of the crop in terms of the best “logical defense of Christianity”. They’re not intellectuals. I, as a Christian, don’t find their arguments compelling either.
2. Jason Lisle (PhD, astrophysics, University of Colorado-Boulder) and Georgia Purdom (PhD, molecular genetics, Ohio State University) are a cut above. You allege Lisle “has not published one paper” and that “they hide in creationist magazines”. I’m not a young Earth creationist. However, it’s easy enough to look up that both Lisle and Purdom have published in peer-reviewed scientific journals. For example, Lisle has published in the Astrophysics Journal (here) and Solar Physics (here), while Purdom has published in the Journal of Bone and Mineral Research (here), the Journal of Leukocyte Biology (here), and the Journal of Chromatography A (here), among others. Again, this isn’t to suggest I necessarily agree with Lisle’s or Purdom’s arguments, but I’m just responding to your indication that they lack publications in peer-reviewed scientific journals. (Just don’t move the goalposts and suggest they haven’t published in prestigious peer-reviewed scientific journals like Nature or Science. However, if you do, it’s worth noting most secular scientists haven’t either.)
3. I myself am in a scientific discipline and have a scientific degree. I have published scientific research. I’m currently at a reputable academic institution. Moreover, I’ve met many intelligent Christians in scientific and other fields who have degrees from and who have worked at prestigious academic institutions too. I don’t say any of this for my own sake, let alone to brag. I don’t really think degrees and titles and names and so on are worth bragging about, though atheists often do, as if science is the be-all and end-all of scholarship or even knowledge in general (scientism). Rather, I say this to point out that even in my small or limited experience I’m aware of many intelligent Christians who can make a “logical defense of Christianity”. For instance, take Neil Shenvi (PhD, theoretical chemistry, UC Berkeley).
4. Far removed from the confines of my small circles or spheres of influence, it’s still quite evident the “logical defense of Christianity” is very much alive and well. See the booklet of interviews with intelligent and intellectual Christians called Love the Lord with Heart and Mind for a start.
5. Scientists aren’t the only scholars who have made a “logical defense of Christianity”. There are many other scholars who would be relevantly or appropriately involved in a “logical defense of Christianity”. Such as historians, linguists, textual critics, theologians, philosophers. In fact, if you want “logical”, the experts in logic tend to be philosophers and mathematicians since philosophy and mathematics involve logic at their very hearts. Personally, I’d prefer to say a “reasonable” defense of Christianity rather than a “logical” defense of Christianity, but I’m just employing your terminology for the express purpose of your post.
6. I realize there’s some irony in my replying to clubschadenfreude, because clubschadenfreude represents the yokel or fundamentalist wing of atheism, not the more intellectually sophisticated wing of atheism. Nevertheless I thought I’d address her allegation that Christianity isn’t intellectually defensible because it has some popular appeal in a secular society like the United States and it’s worth addressing popular notions from time to time.