I'm not sure what you are taking exception to here. Josh McDowell is one of the foremost Christian apologists today, much as CS Lewis was in his generation. McDowell has several excellent books that demonstrate his status as a leading Christian apololgist, including Evidence that Demands a Verdict, and More than a Carpenter, and Reasons Skeptics Should Consider Christianity among others.
What I object to is the use of the word appologist. The word appologist is generally used in a negative setting. The individual was an appologist for "insert the negative person or subject matter here".
I just don't include Christianity in a category that needs an appologist. It may need a proponent or and advocate, but an appologist. I don't think so.
I see this as a couched insult to the gentleman in question.