This is another one that has been recently changed. Holder just changed it and said it was only valid for specific cases like child porn and something else.
I don't like any of this either and it concerns me very much.
I'm generally sympathetic to LE who have to deal with mostly stupid criminals everyday. It would test any reasonable man's patience.
I'm also skeptical of LE, as human beings are non-ideal, and putting a large amount of authority in a non-ideal system will generally yield some disagreeable results. There is also the self preservation instinct of the bureacracy that tends to be resistant to even reasonable reforms that could make it perhaps a better system.