>People don't care about open source and sustainability but they care a lot about not being hacked and having a phone that runs, and runs fast.

You overestimate non-technical people. They're not afraid of getting hacked, they don't understand why they should be, and they don't get why unmaintained software is bad.

People don't give a shit to the extent that the device works well. Security is of course a huge part of that but you don't understand people well enough if you think there's a significant group that will sacrifice good UX and reliability for security and rapid updates. That's what nerds like us do.