You should also understand that authorities do not seek that kind of evidence for violent crimes in the moment. Intelligence services capture massive amounts of traffic for future investigation. What you post today could be evidence for an offense you can't imagine ten years from now.
If your argument rests on future, unknown abuses... I'm afraid that's tin foil territory.
Your comments sound like regurgitated talking points from when Snowden was in the news, so I'm not sure who you think you're educating about fingerprinting, etc. It's been common knowledge for years.