This is written with what feels like the peak understanding of my kid's school's IT department: "well, they're just so smart, we can't find any way of stopping them!"
They don't even have to think of a way around any of it. They just need to search online to find someone who has found a way around it. Or prompt AI to come up with a solution. And even if someone is so dull that they don't think about that, it will probably make it to them as the info spreads by word of mouth.