Updates
At the risk of becoming yet another broken record (in the vinyl sense of the word, not the Guinness sense), there are at least two issues around updates:
1) Devices need to be _capable_ of updating their software (and of reverting to a "not great but not totally borked" state).
2) Making updates mandatory, non-reversible, and silent? That's how a zero-day at the manufacturer becomes a worldwide shit-storm.
(And that's not even addressing which criminal gang/government agency is using that zero-day.)