He has, he just has a very bad argument against it. Every additional component you add to the system reduces the probability of that particular combination of components.
Philosopher Paul Draper has done a nice overview and rebuttal to all of Behe’s various versions of the IC argument, an exposition of which can be found here:
Behe’s Darwin’s Black Box: Paul Draper’s Critique
Behe has never responded to Paul Draper’s critique. He’s simply ignored that it even exists. Draper’s article can be found here: https://place.asburyseminary.edu/cgi/viewcontent.cgi?article=1868&context=faithandphilosophy