> If you want privacy, owning an aircraft is not the way to go. Renting or chartering one might be better against casual observers, but there is still a paper trail. You may be able to add some more levels of indirection.

But that paper trail cannot be accessed through ADSB. If you charter a plane, there's no way someone can deduct who you are via ADS-B signals alone. And agencies with access to the paper trail don't need ADS-B to know where you went.