It sounded like magic the first time I heard Keno describe this. But seeing it built and spread to 700 repos in a few days, it appears obvious in retrospect. The only question now is - why didn't we do this sooner?
Maturity of the ecosystem and a growing awareness of the problem that this solves, perhaps?
It's a kind of ripeness for change which, I think occurs in every large project. There's that gnawing feeling that something is more difficult than it should be, followed by a sudden realization that the basic tooling now exist to solve the underlying problem without an epic amount of work.
Attobot has been tremendously helpful, and femtocleaner will be too. Nice work guys!