There are mountains of evidence demonstrating that people change their behaviors when they know they are being watched. Do we really care about the automatic resolution of petty squabbles between children, or even the coercion of children to never engage in petty squabbles? Do we really want to rob children of mischief, conflict resolution, and making a case for themselves in a way that cannot always be substantiated with hard evidence? Do we really want to condition young minds to see a constant surveillance as a kind of benevolent security blanket?
And that's not even all that's at stake. The Overton window is shrinking as it is, and academia has adopted a censorious and puritanical orthodoxy. Classes benefit a great deal from the students who care enough to challenge what is presented as de facto truth, but I'm inclined to believe that this will give a basis to silence that behavior. Looking back on my own experiences, would I have felt comfortable speaking out against teachers if I knew I was under surveillance? I'm not so sure. But in most cases, even the teachers themselves often told me that they were happy to have somebody engage them meaningfully. But some weren't so happy, and those are the ones that have a new channel for abuse.
And what about the teachers? Some of the best teachers I had would've been fired for what they taught, or allowed students to do. Allowing controversial class discussions, sometimes among students bordering too young to handle the subject matter. Doing a dangerous chemistry or physics demonstration that bends the rules slightly. A classroom led by a cheeky teacher was often ruined by the superintendent or principal standing in the doorway. Now they're in the doorway 24/7.