There's another reason: the criminal justice system is structured in such a way that it requires material evidence to prove someone is guilty and punish them. It would be unacceptable to send an innocent person to prison, and you can't prove that someone has merely viewed content.
We need a rule that people who haven't had to deal with the police and courts need to shut up about how police and courts work.
Even if nobody involved commits a crime and just does their job resonably well, getting your apartment raided, all your neighbours seeing that, your coworkers hearing about it, having to pay for a lawyer, losing all your electronic devices for months if not years and having to buy new ones, not being ablo to make proper plans because you never know when they might throw another court date at you...
But more often than not, they don't do their job well. They're sloppy, indifferent, they don't really understand computers or technology... You might get convicted just because a judge doesn't understand what downloading actually means.
And then you also get the ass-covering. They spent all this time and effort, but now it looks like you're innocent. Their bosses would be pissed, maybe you could even sue them. So they do their best to make even the smallest and dumbest charges stick. They look for other potentian crimes. They threaten you until you take a plea deal. They dissect and twist everything you said. Just so they don't have to admit they made a
"Innocent until proven guilty" might be true in the most technical sense. But being innocent doesn't help when your entire life is thrown upside down, everyone you know thinks you're a criminal, you're spending thousands on legal costs...
