It's not at all analogous. A turn signal tells the people around me that I'm just about to turn, not that I'm on a road trip from Chicago to Tucson. Nor is my entire turn signal history centrally logged and searchable.
- The broadcast of your location data is analogous to a turn signal.
- The FR24 community is analogous to a group capturing data about use of turn signals at various intersections and aggregating them.
Both are perfectly reasonable analogies.
And yes, it's completely possible for people using only publicly-visible information to put together your entire turn signal history and make it searchable.
