The subtitle does not conflate science with theology. The very wording ("bridge") underscores the distinction between the two. But that word also suggests that they don't have to be antagonists. The evidence for an intelligently designed universe conforms to scientific requirements. It also happens to support one aspect of some theological accounts. Must science, to be "legitimate," contradict theology in every last particular?
No. But a book claiming to be a "bridge" between science and theology can hardly be " a strictly scientific theory devoid of religious commitments," insofar as it would bridge the two.