Even if this sort of (obviously rare) attack is not a concern, it baffles me how few otherwise-intelligent people fail to see the way these updaters provide the network (which itself is always listening, see Room 641A and friends) with a fingerprint of your specific computer and a way to track its physical location based on the set of software you have installed, all of which want to check for updates every goddamn day.
Threat modeling: it keeps things realistic.