Okay Ron, all kidding aside(this is gonna kill me, but I'll try)....
The whole story in a nutshell about these guys is that they were smart enough to "strike while the iron was hot". In that I mean they came onto the scene when motorcycling was experiencing a resurgence in the public's mind.(thanks in large part to Willie G. buying his family's concern back and then making the more reliable Evo Harley, just as many of us Boomers came back to motorcycles after the kids went off to college. Because there were few, if any, mass media programs about motorcycle makers, and because these guys had a "good shtick"(their little dramatic tiffs), and because they could bolt together and weld together parts...it took off and captured the public's imagination.
Now admittedly, I haven't watched them much since the first year they were broadcast on their old network(Discovery), and maybe they have become more imaginative with their design elements and MAYBE have actually branched out to be more than what Jesse James called them a few year ago("Cake Decorators"), but I kind of doubt it.(but as I said, I haven't watch them since they were switched to the TLC network, so I don't know for sure)