You can revert it to a older version though.
With most cars you flash the ECU with software using a diagnostic tool, if you don't like the new version you can just flash a older version on there.
Or in many cases modify it and flash your custom version.
You don't have that control if it's all Internet dependant, and there's no kill switch.
And we can never make cars 100% safe. That doesn't mean we shouldn't care about seat-belts, airbags, ABS and crumple zones.
Just because we can't make the danger zero, doesn't mean we shouldn't do the bare minimum to mitigate the danger.