Donald, I think your experience might be weighted because you are spending a lot of time reading Catholic Answers materials. In case you have never read the story of its founding:
Catholic Answers began in 1979 after a Fundamentalist church in San Diego, California, decided to leaflet the cars at a local parish during Mass. The fliers attacked the Eucharist and were riddled with misinformation. Upon coming out of Mass and finding one on his car, attorney Karl Keating was annoyed and drove home with a modest goal: to draft a tract that would present basic Catholic beliefs and refute anti-Catholic charges. Keating signed the tract “Catholic Answers,” opened up a post office box in that name, and then placed his rebuttal on the windshields of cars in the Fundamentalist church’s lot.
That modest effort was Catholic Answers’ first publication. Much to his surprise, Keating soon found the post office box bulging with letters—some unquotable, others cheering him on and asking for other tracts. He obliged, writing 24 more tracts that comprised Catholic Answers’ total line of publications for several years.
He also wrote articles for the Catholic press about the clash between Fundamentalists and Catholics, drawing responses that convinced him there was a real need for information on Catholic apologetics—the study of how to explain and defend the faith. In 1986 he launched a monthly newsletter to help people keep abreast of what Catholic Answers was doing and learn more about the exciting field of apologetics.
In 1988 growing demand and his own burgeoning desire to commit himself to serving the faith led Keating to close his law practice and turn Catholic Answers into a full-time apostolate, with its first office and staff members.
The apostolate grew quickly, and in 1990 its original newsletter was replaced with This Rock, a 10-issue-a-year magazine that has become the nation’s premier journal of Catholic apologetics and evangelization.
If you read their mission statement, you will find that part of their stated mission is to “lead non-Catholics into the fullness of the faith.” Many of the CA apologists are former Protestants as well so they talk about what they know. There are plenty of Protestant organizations whose mission is to lead Catholics into whatever they believe is the “fullness of the faith” as well. Do you think that no Protestant should speak about issues of controversy between Catholicism and Protestantism? If I spent all my time on the Alpha and Omega Ministries website, for example, then I might come away with the idea that all Protestants talk about is why they hate Catholicism. I do not think it is inappropriate for an organization called Catholic Answers to focus on Protestant-Catholic issues because the numeric majority, both in kind in frequency, come from Protestant mouths. You might wish this were not the case but it’s just the reality at the moment.
The Protestant speakers you mentioned also do not just happen to be Protestant. They are Protestant for their own reasons and they would not hesitate to say why they are not Catholic. For example, Dr. William Lain Craig: “Why I’m not a Catholic.”
Of course, they do not speak about this as frequently as others because that is not their focus. There are Catholic apologists who focus on other things besides Protestant-Catholic issues. Their are Catholic apologists just like your list of Protestant apologists who focus on theist-atheist issues as well, such as the one’s Dmar named. I could mention others like Trent Horn from Catholic Answers, Edward Feser or Fr. Rober Spitzer.
In short, I don’t think Catholic apologetics is fundamentally different from Protestant apologetics on this point. Moreover, from the Catholic perspective, even to defend the kind of “mere Christianity” (as Dr. Craig put it) that you’re talking about is implicitly conceding the Protestant position as the Christian faith is inseparably bound up with the Catholic doctrine of the Church.