Like most I've been listening to this same old argument for nearly 30 years. Old enough now to know it doesn't have to be perfect, it doesn't have to even be 50% effective to mark a substantial improvement, a significant chunk of young people won't even need a technical restriction beyond being told the behaviour is against the law because it's bad for them.
But keep goading with "it's technically impossible" and watch what's left of the Internet turn into a government licensing fest, because it is entirely technically possible. Imagine how much cleaner and shiny the nation's pipes would be if we simply throttled any ciphertext flow that couldn't be matched to an Ofcom license holder. They'd never do that. No country in the world has done that, right?
But keep goading with "it's technically impossible" and watch what's left of the Internet turn into a government licensing fest, because it is entirely technically possible. Imagine how much cleaner and shiny the nation's pipes would be if we simply throttled any ciphertext flow that couldn't be matched to an Ofcom license holder. They'd never do that. No country in the world has done that, right?