He had enabled a setting that says "Install [...] security updates". If enabling that setting does not lead to the system installing security updates, that's on Apple.

▲

GeekyBear 6 hours ago | parent [-]

System updates also include security fixes.

▲

janfoeh 4 hours ago | parent [-]

Which is not apparent if you give them an explicitly labelled separate toggle.

	▲	GeekyBear 4 hours ago \| parent [-]
		I guess Apple could do what Microsoft did and take away the user's ability to control system updates. However, this user made the choice to turn off the installation of system updates manually, based on a false assumption.