This is data that can't be taken back once the government has it. I wish people would take the concept of the government as adversary more seriously. For example, technology is used as a tool of oppression against Uighurs in Xinjiang, LGBT people in the middle east, malcontents in any number of regimes around the world.

The US is comparatively not so oppressive, but there are still plenty of unjust laws on the books and plenty of vengeful prosecutors out there. Even for those convicted of what one might rightly consider a crime, in the vast majority of those cases the punishments are designed to be more effective at "retribution" than "correction". I think it matters to be vigilant when governments are probing the boundaries of what techniques are acceptable.