Off the top of my head, I don’t have a problem with it. They’ve been using black boxes in airplanes for years and they’re a very useful data tool for legal, liability & insurance purposes. aka: it’s a money saver.
My philosophy is: if the government is going to exploit you, you’re dead either way. If you want a government that is as least dangerous as possible, it’s more effective to ramp up means of making the government increasingly transparent than it is to make it impotent. Making it impotent is one way to help ensure your security, and it does indeed work, but its a much cruder tool that allows a lot of good meat to get carved off in the process.