I don't get it (aka hate it), any sophisticated government adversary (terror groups, organized crime, etc) will simply use the existing strong security measures

I don't get it (aka hate it), any sophisticated government adversary (terror groups, organized crime, etc) will simply use the existing strong security measures that the government cannot crack (since they have no escrowed key). To me that means this measure isn't about the boggy-man of terrorism, etc rather its about everyday criminal investigations. I think people are (overly) willing to give up their liberties when faced with the major boggy-man threats, but I think convincing the public to give up liberty to catch the pot dealer down the street or the dude embezzling from mega-corp is going to be a much harder sell politically.