Fourth generation warfare theory is going mainstream if - as we see here - academic publisher Routledge is distributing edited compendiums on the subject. Would the difficult, cantankerous Col. John Boyd be proud? I think so, as he was dedicated to the dissemination of his ideas, not to the ownership of them.
Recall that under the Boydian analysis, ours is a Civil War military (second generation) which has not yet reached John J. Pershing's 1918 idea of and hope for maneuver warfare. I don't know what good it does to talk of step four when you have not taken step three.
If we're stuck in 1865, we'll not soon move into 2065 as a result of some seminars and books.