It'll still update behind your back after 60 days. It's deliberately designed so that the users does not have complete control over what their devices run. It's

It'll still update behind your back after 60 days. It's deliberately designed so that the users does not have complete control over what their devices run. It's designed in a way that even experienced sysadmins will have hard time taking back control of their devices. Ultimately these knobs are just farce. What they are doing could be easily achieved by cron or any other task scheduler, but that would not allow Canonical to keep control of user devices.