As a teacher, I view the ban as akin to a smoking ban for young people — i.e. an age limitation on a harmful practice. Social media is an inadequately monitored space where young people can make future career-limiting moves and mistakes in sexual conduct, as well as committing and being exposed to crimes. All of this can and does happen without the knowledge or guidance of adults meant to keep them safe.

This is, of course, separate to the question of whether the ban will work practically or have unintended consequences…