I totally get the viewpoint, but there are other perspectives to consider
My assumption has been that the real bad guys use their own infrastructure attached to anonymous access methods like Tor, or using anonymous file sharing accounts that can't be tied to an iPhone's serial number. Maybe that's not true?
Offering transparency in these areas may help to understand whether the government is really doing this to arrest criminals, or just to have unfettered access to everyone's data.
Locations of military assets, passcodes, officials' personal details, etc.
But you cannot have a democracy without the people knowing what their government is doing.
Uh...[1] yeah. Secret courts are the worst! Those British and their secrets!
[1]: https://en.wikipedia.org/wiki/United_States_Foreign_Intellig...