They're a bit more separated on macOS but still not really separate. On iOS, it's very much tied to the iOS/iPad OS version.
There's perfectly functional iPads out there that are stuck on an iOS version and are thus e-waste as more and more Internet becomes inaccessible to them.
There's perfectly functional iPads out there that are stuck on an iOS version and are thus e-waste as more and more Internet becomes inaccessible to them.