> No, the most realistically sustainable design is one where the software is built into the durable item and not connected to the internet, so it never changes

> No, the most realistically sustainable design is one where the software is built into the durable item and not connected to the internet, so it never changes and doesn't need to worry about security issues. You can keep using the thing until it fails from mechanical issues and can't be easily repaired. My car isn't connected to the internet, it has not received any updates. However Google enjoys messing with the Android BT stack for whatever reason (there was a period in the mid 2010s where BT on Android was dramatically ~broken~ rewritten every couple of years), so accordingly my car has lost functionality.