It was definitely not 'turned off' completely. They have an internal 'internet' that was still largely active and not every organisation or person lost full internet access.
Note that it also happened in a country that was already very isolated from the world and that it hurt them economically significantly. It's not something a Western country can just do and keep doing for months on end without massive societal upheaval.
Also remember that any connection, even one between humans and on paper is an attack surface. Social engineering is already a huge issue when done by humans and we're seeing it become even easier and automated by using AI generated voice and video. Are we going to cut off all access to the outside world permanently?
Note that it also happened in a country that was already very isolated from the world and that it hurt them economically significantly. It's not something a Western country can just do and keep doing for months on end without massive societal upheaval.
Also remember that any connection, even one between humans and on paper is an attack surface. Social engineering is already a huge issue when done by humans and we're seeing it become even easier and automated by using AI generated voice and video. Are we going to cut off all access to the outside world permanently?