What's public and what's stored are different. A strong argument can be made that 'nuke fucking everything' is actually the best course of action. It helps mitigate tainted juries and if you're talking about what should and shouldn't be laws the top priority is the operation of the system to adjudicate when laws are broken.

Feel free to disagree but there's no way a "keep prejudicial evidence that may not even be allowed into court out there for people to be blasted with when the jury should be coming in with no preconceptions". We don't live in an ideal world, we live in ours.