This isn't like other software "recalls" where the result is just an over-the-air update or a request to bring your car to a dealership when you have time, in this case they have actually physically removed the recalled vehicles from the road.
To use your analogy: if a bug in Python caused the PSF and package managers to actually make 3.14.4 unavailable and companies started taking Python services offline until a fix was found, yes that would be a really big deal.
But that is what it was: the remedy in the recall was an over-the-air update and was already universally applied several weeks time before the recall was actually formalized.
Also seems linguistically complex, since the dictionary meaning of recall is an "official order to return item to a manufacturer", but Waymo doesn't sell the vehicle itself.