We have a great symphony orchestra here in Seattle. The fantastic aural experience is from many accomplished musicians. But who takes the bows and who is showered with the accolades? Well, the conductor, of course! And yet he plays not a single note of music! We also have a world-famous glass blower/glass sculptor in Dale Chihuly. Many artisans are employed producing in glass the visions in his head. He rarely has any direct involvement in their production, usually supplying but vague sketches. And yet, every piece bears his name as a Chihuly original.
If Kier and Mike had directed a select team of programmers to produce Xenforo, would it be any less their creation? The great inventor Thomas Edison supervised hundreds of craftsmen and engineers and thinkers. I doubt that in his most productive years he had much time for real hands-on. He once said "genius is 10% inspiration and 90% perspiration". I suspect that he supplied most of the inspiration and his workers supplied most of the perspiration!
So it has been, and so it shall always be.