Great essay. The Patriot Act may have been the obvious turning point but the FBI had public data collection programs even earlier. The goal was keyword watching of all network traffic. The desire for more collection is baked into government. It is hubris that leads powerful people to think if they only had more control they could stop all ills. The deceit of power makes people believe it doesn't matter what the outcome is if the goal is noble. That is why the founding fathers put restrictions on government power. The people that run it will always fall for the same traps of power because they are just like everybody else.
So yes, it is high time to discuss how our rights apply in a digital age and put some reasonable restrictions on the power available to government.