So far the FAA has been lenient in enforcing ADS-B Out equipment failures for aircraft flying in ADS-B mandated airspace, but there are signs that a crackdown is coming. In this video, Larry Anglisano and Sy Pinkert talk about what you need to do if the FAA puts your aircraft on the No Services list if it determined the installed equipment isn't working precisely as it should.
ADS-B out is a violation of privacy; or unlawful. Meaning it is optional and the FAA will not tell people that because of the potential law suits. With aircraft being flown for over 100 years without anything like ADS-B out; why is it needed? It is not. So the author is misinformed; not knowing the whole picture; unfortunately. Less government, not more is the current fashion. And people are ignoring this fact; and probably to their detriment. ADS-B was provided as a safety measure. Except the privacy issue greatly outweighs any safety advance.
Safety was not the primary reason for ADS-b. The primary reason for ADS-b was to enable closer minimums between planes to allow increased volume of traffic at airports. That was the selling point the FAA used to justify the 2020 deadline for GA airplanes. All the other items like traffic displays and weather were tagged on the encourage compliance with the deadline. From my experience since the deadline, controller staffing or lack thereof has hindered the original reason for ADS-b. Airliners didn’t need it since jets and many turboprops have TCAS for traffic. That may have been part of the reason airlines were given more time to equip.