The logistics of breaking into a house undetected to set up tiny microphones suggests a lot of manpower, and to do that to each house in the United States would be near impossible without raising suspicion.

The reason to care now is because it likely wasn't happening then.

Also, whether the CIA "gives a shit" is irrelevant. It is still happening regardless, and you cannot know for certain what the CIA does and does not "give a shit" about.

If you have documents showing what this data is being used for, do the world a service and release them.