But I think the point is that this arrangement seems to be somehat binary (it works or it doesn't work). The gears are synchronized, which allows successful jumping. If the gears were not perfectly synchronized, the jumping would go very badly. So, one might surmise that the gears "came out of nowhere" rather than slowly evolving through random genetic drift over millions of years. It's not a question of improvement over time: it works or it doesn't work.
Or not. Because bugs can jump without "gears," and they could presumably jump better with simpler versions of the gears than they could without them. So I'm not sure why this is particularly difficult to puzzle out at all, other than it's yet another example of a brilliantly carved out ecological niche. The headline claims that scientists are "hopping mad" about this -- but as far as I can tell that's a total lie.